diff --git a/swad_ID.c b/swad_ID.c
index d2746164..bdf1838d 100644
--- a/swad_ID.c
+++ b/swad_ID.c
@@ -551,8 +551,7 @@ void ID_ShowFormOthIDs (void)
 	{
 	 /***** Start box *****/
          Box_StartBox (NULL,Txt_ID,NULL,
-                       NULL,
-                       false);	// Not closable
+                       NULL,Box_NOT_CLOSABLE);
 
 	 /***** Show user's record *****/
 	 Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_LIST,
diff --git a/swad_MFU.c b/swad_MFU.c
index e1e2dfde..1d3bc284 100644
--- a/swad_MFU.c
+++ b/swad_MFU.c
@@ -225,8 +225,7 @@ void MFU_WriteBigMFUActions (struct MFU_ListMFUActions *ListMFUActions)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_My_frequent_actions,NULL,
-                 Hlp_STATS_Frequent,
-                 false);	// Not closable
+                 Hlp_STATS_Frequent,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div id=\"MFU_actions_big\">");
 
    /***** Write list of frequently used actions *****/
diff --git a/swad_account.c b/swad_account.c
index 375f0b96..2ad0b329 100644
--- a/swad_account.c
+++ b/swad_account.c
@@ -145,8 +145,7 @@ static void Acc_ShowFormCheckIfIHaveAccount (const char *Title)
 
    /***** Start box *****/
    Box_StartBox (NULL,Title,NULL,
-                 Hlp_PROFILE_SignUp,
-                 true);	// Closable
+                 Hlp_PROFILE_SignUp,Box_CLOSABLE);
 
    /***** Help alert *****/
    Ale_ShowAlert (Ale_INFO,Txt_If_you_think_you_may_have_been_registered_);
@@ -219,9 +218,7 @@ void Acc_CheckIfEmptyAccountExists (void)
 	                    (NumUsrs == 1) ? Txt_Do_you_think_you_are_this_user :
 					     Txt_Do_you_think_you_are_one_of_these_users,
 			    NULL,
-			    NULL,
-			    true,	// Closable
-			    5);
+			    NULL,Box_CLOSABLE,5);
 
 	 /***** Initialize structure with user's data *****/
 	 Usr_UsrDataConstructor (&UsrDat);
@@ -350,9 +347,7 @@ static void Acc_ShowFormRequestNewAccountWithParams (const char *NewNicknameWith
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Create_account,NULL,
-                      Hlp_PROFILE_SignUp,
-                      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_SignUp,Box_NOT_CLOSABLE,2);
 
    /***** Nickname *****/
    if (NewNicknameWithoutArroba[0])
@@ -417,8 +412,7 @@ void Acc_ShowFormGoToRequestNewAccount (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_New_on_PLATFORM_Sign_up,Cfg_PLATFORM_SHORT_NAME);
    Box_StartBox (NULL,Gbl.Title,NULL,
-                 Hlp_PROFILE_SignUp,
-                 false);	// Not closable
+                 Hlp_PROFILE_SignUp,Box_NOT_CLOSABLE);
 
    /***** Button to go to request the creation of a new account *****/
    Act_FormStart (ActFrmMyAcc);
@@ -478,9 +472,7 @@ void Acc_ShowFormChangeMyAccount (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_User_account,NULL,
-                      Hlp_PROFILE_Account,
-		      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_Account,Box_NOT_CLOSABLE,2);
 
    /***** Nickname *****/
    if (IMustFillNickname)
diff --git a/swad_agenda.c b/swad_agenda.c
index bc9d2d5f..856d5cbe 100644
--- a/swad_agenda.c
+++ b/swad_agenda.c
@@ -149,8 +149,7 @@ void Agd_ShowMyAgenda (void)
 
    /***** Start box *****/
    Box_StartBox ("100%",Txt_My_agenda,Agd_PutIconsMyFullAgenda,
-		 Hlp_PROFILE_Agenda,
-                 false);	// Not closable
+		 Hlp_PROFILE_Agenda,Box_NOT_CLOSABLE);
 
    /***** Put forms to choice which events to show *****/
    Agd_ShowFormToSelPast__FutureEvents ();
@@ -370,8 +369,7 @@ void Agd_ShowUsrAgenda (void)
 	 Box_StartBox ("100%",Gbl.Title,
 		       ItsMe ? Agd_PutIconsMyPublicAgenda :
 			       Agd_PutIconsOtherPublicAgenda,
-		       Hlp_PROFILE_Agenda_public_agenda,
-                       false);	// Not closable
+		       Hlp_PROFILE_Agenda_public_agenda,Box_NOT_CLOSABLE);
 
 	 /***** Show the current events in the user's agenda *****/
 	 Agd_ShowEventsToday (Agd_ANOTHER_AGENDA_TODAY);
@@ -414,8 +412,7 @@ void Agd_ShowOtherAgendaAfterLogIn (void)
 	    Box_StartBox ("100%",Gbl.Title,
 			  ItsMe ? Agd_PutIconToViewEditMyFullAgenda :
 				  Agd_PutIconsOtherPublicAgenda,
-			  Hlp_PROFILE_Agenda_public_agenda,
-                          false);	// Not closable
+			  Hlp_PROFILE_Agenda_public_agenda,Box_NOT_CLOSABLE);
 
 	    /***** Show the current events in the user's agenda *****/
 	    Agd_ShowEventsToday (Agd_ANOTHER_AGENDA_TODAY);
@@ -1538,14 +1535,10 @@ void Agd_RequestCreatOrEditEvent (void)
    /***** Start box and table *****/
    if (ItsANewEvent)
       Box_StartBoxTable (NULL,Txt_New_event,NULL,
-			 Hlp_PROFILE_Agenda_new_event,
-			 false,	// Not closable
-			 2);
+			 Hlp_PROFILE_Agenda_new_event,Box_NOT_CLOSABLE,2);
    else
       Box_StartBoxTable (NULL,Txt_Edit_event,NULL,
-			 Hlp_PROFILE_Agenda_edit_event,
-			 false,	// Not closable
-			 2);
+			 Hlp_PROFILE_Agenda_edit_event,Box_NOT_CLOSABLE,2);
 
    /***** Event *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -1949,8 +1942,7 @@ void Agd_PrintAgdQRCode (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Where_s_USER,Gbl.Usrs.Me.UsrDat.FullName);
    Box_StartBox (NULL,Gbl.Title,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Print QR code ****/
    QR_PrintQRCode ();
diff --git a/swad_announcement.c b/swad_announcement.c
index 6297739a..47dd1d67 100644
--- a/swad_announcement.c
+++ b/swad_announcement.c
@@ -123,9 +123,7 @@ void Ann_ShowAllAnnouncements (void)
    Box_StartBox ("550px",Txt_Announcements,
                  ICanEdit ? Ann_PutIconToAddNewAnnouncement :
 			    NULL,
-		 Hlp_MESSAGES_Announcements,
-                 false);	// Not closable
-
+		 Hlp_MESSAGES_Announcements,Box_NOT_CLOSABLE);
    if (!NumAnnouncements)
       Ale_ShowAlert (Ale_INFO,Txt_No_announcements);
 
@@ -413,9 +411,7 @@ void Ann_ShowFormAnnouncement (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_announcement,NULL,
-                      Hlp_MESSAGES_Announcements,
-		      false,	// Not closable
-                      2);
+                      Hlp_MESSAGES_Announcements,Box_NOT_CLOSABLE,2);
 
    /***** Announcement subject and body *****/
    Ann_PutSubjectMessage ("Subject",Txt_MSG_Subject, 2);
diff --git a/swad_assignment.c b/swad_assignment.c
index 1a3d0d4d..3c115e79 100644
--- a/swad_assignment.c
+++ b/swad_assignment.c
@@ -138,8 +138,7 @@ static void Asg_ShowAllAssignments (void)
 
    /***** Start box *****/
    Box_StartBox ("100%",Txt_Assignments,Asg_PutIconsListAssignments,
-                 Hlp_ASSESSMENT_Assignments,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Assignments,Box_NOT_CLOSABLE);
 
    /***** Select whether show only my groups or all groups *****/
    if (Gbl.CurrentCrs.Grps.NumGrps)
@@ -1175,14 +1174,10 @@ void Asg_RequestCreatOrEditAsg (void)
    /***** Start box and table *****/
    if (ItsANewAssignment)
       Box_StartBoxTable (NULL,Txt_New_assignment,NULL,
-			 Hlp_ASSESSMENT_Assignments_new_assignment,
-		         false,	// Not closable
-			 2);
+			 Hlp_ASSESSMENT_Assignments_new_assignment,Box_NOT_CLOSABLE,2);
    else
       Box_StartBoxTable (NULL,Txt_Edit_assignment,NULL,
-			 Hlp_ASSESSMENT_Assignments_edit_assignment,
-			 false,	// Not closable
-			 2);
+			 Hlp_ASSESSMENT_Assignments_edit_assignment,Box_NOT_CLOSABLE,2);
 
    /***** Assignment title *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -1275,9 +1270,7 @@ static void Asg_ShowLstGrpsToEditAssignment (long AsgCod)
                The_ClassForm[Gbl.Prefs.Theme],
                Txt_Groups);
       Box_StartBoxTable ("100%",NULL,NULL,
-                         Hlp_USERS_Groups,
-			 false,	// Not closable
-                         0);
+                         Hlp_USERS_Groups,Box_NOT_CLOSABLE,0);
 
       /***** First row: checkbox to select the whole course *****/
       fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_attendance.c b/swad_attendance.c
index 6fde700a..c090d106 100644
--- a/swad_attendance.c
+++ b/swad_attendance.c
@@ -226,8 +226,7 @@ static void Att_ShowAllAttEvents (void)
    /***** Start box *****/
    Box_StartBox ("100%",Txt_Events,ICanEdit ? Att_PutIconToCreateNewAttEvent :
 				              NULL,
-		 Hlp_USERS_Attendance,
-                 false);	// Not closable
+		 Hlp_USERS_Attendance,Box_NOT_CLOSABLE);
 
    /***** Select whether show only my groups or all groups *****/
    if (Gbl.CurrentCrs.Grps.NumGrps)
@@ -1090,14 +1089,10 @@ void Att_RequestCreatOrEditAttEvent (void)
    /***** Start box and table *****/
    if (ItsANewAttEvent)
       Box_StartBoxTable (NULL,Txt_New_event,NULL,
-			 Hlp_USERS_Attendance_new_event,
-		         false,	// Not closable
-		         2);
+			 Hlp_USERS_Attendance_new_event,Box_NOT_CLOSABLE,2);
    else
       Box_StartBoxTable (NULL,Txt_Edit_event,NULL,
-			 Hlp_USERS_Attendance_edit_event,
-			 false,	// Not closable
-			 2);
+			 Hlp_USERS_Attendance_edit_event,Box_NOT_CLOSABLE,2);
 
    /***** Attendance event title *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -1197,9 +1192,7 @@ static void Att_ShowLstGrpsToEditAttEvent (long AttCod)
                          "<td class=\"LEFT_TOP\">",
                The_ClassForm[Gbl.Prefs.Theme],Txt_Groups);
       Box_StartBoxTable ("100%",NULL,NULL,
-                         NULL,
-			 false,	// Not closable
-                         0);
+                         NULL,Box_NOT_CLOSABLE,0);
 
       /***** First row: checkbox to select the whole course *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -1830,9 +1823,7 @@ void Att_SeeOneAttEvent (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Event,NULL,
-                      Hlp_USERS_Attendance,
-		      false,	// Not closable
-                      2);
+                      Hlp_USERS_Attendance,Box_NOT_CLOSABLE,2);
 
    Att.AttCod = Gbl.AttEvents.AttCod;
    Att_ShowOneAttEvent (&Att,true);
@@ -1882,9 +1873,7 @@ static void Att_ListAttOnlyMeAsStudent (struct AttendanceEvent *Att)
    /***** List students' data *****/
    /* Start box and table */
    Box_StartBoxTable (NULL,NULL,NULL,
-                      Hlp_USERS_Attendance,
-		      false,	// Not closable
-                      2);
+                      Hlp_USERS_Attendance,Box_NOT_CLOSABLE,2);
    fprintf (Gbl.F.Out,"<tr>"
 		      "<th></th>"
 		      "<th></th>"
@@ -1943,8 +1932,7 @@ static void Att_ListAttStudents (struct AttendanceEvent *Att)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Attendance,NULL,
-                 Hlp_USERS_Attendance,
-                 false);	// Not closable
+                 Hlp_USERS_Attendance,Box_NOT_CLOSABLE);
 
    /***** Form to select groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActSeeOneAtt);
@@ -2681,8 +2669,7 @@ void Usr_ReqListStdsAttendanceCrs (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_ROLES_PLURAL_Abc[Rol_STD][Usr_SEX_UNKNOWN],NULL,
-		 Hlp_USERS_Attendance_attendance_list,
-                 false);	// Not closable
+		 Hlp_USERS_Attendance_attendance_list,Box_NOT_CLOSABLE);
 
    /***** Form to select groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActReqLstStdAtt);
@@ -3114,8 +3101,7 @@ static void Att_ListEventsToSelect (Att_TypeOfView_t TypeOfView)
    Box_StartBoxTable (NULL,Txt_Events,NULL,
                       TypeOfView == Att_PRINT_VIEW ? NULL :
                         	                     Hlp_USERS_Attendance_attendance_list,
-		      false,	// Not closable
-                      2);
+		      Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -3229,7 +3215,7 @@ static void Att_ListStdsAttendanceTable (Att_TypeOfView_t TypeOfView,
                         	                             NULL),
                  TypeOfView == Att_PRINT_VIEW ? NULL :
                         	                Hlp_USERS_Attendance_attendance_list,
-                 false);	// Not closable
+                 Box_NOT_CLOSABLE);
    if (PutButtonShowDetails)
       Tbl_StartTableWideMargin (2);
    else
@@ -3449,8 +3435,7 @@ static void Att_ListStdsWithAttEventsDetails (Att_TypeOfView_t TypeOfView,
    Box_StartBoxTable (NULL,Txt_Details,NULL,
                       TypeOfView == Att_PRINT_VIEW ? NULL :
                         	                     Hlp_USERS_Attendance_attendance_list,
-		      false,	// Not closable
-                      2);
+		      Box_NOT_CLOSABLE,2);
 
    /***** List students with attendance details *****/
    for (NumStd = 0, Gbl.RowEvenOdd = 0;
diff --git a/swad_banner.c b/swad_banner.c
index 63f1fb4b..ebf12d10 100644
--- a/swad_banner.c
+++ b/swad_banner.c
@@ -118,8 +118,7 @@ void Ban_SeeBanners (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Banners,Ban_PutFormToEditBanners,
-                 Hlp_SYSTEM_Banners,
-                 false);	// Not closable
+                 Hlp_SYSTEM_Banners,Box_NOT_CLOSABLE);
 
    /***** Write all banners *****/
    if (Gbl.Banners.Num)	// There are banners
@@ -209,8 +208,7 @@ void Ban_EditBanners (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Banners,Ban_PutIconToViewBanners,
-                 Hlp_SYSTEM_Banners_edit,
-                 false);	// Not closable
+                 Hlp_SYSTEM_Banners_edit,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new banner *****/
    Ban_PutFormToCreateBanner ();
@@ -834,9 +832,7 @@ static void Ban_PutFormToCreateBanner (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_banner,NULL,
-                      Hlp_SYSTEM_Banners_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_SYSTEM_Banners_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Ban_PutHeadBanners ();
diff --git a/swad_box.c b/swad_box.c
index 8769aa5d..0960baf8 100644
--- a/swad_box.c
+++ b/swad_box.c
@@ -58,7 +58,7 @@ extern struct Globals Gbl;
 
 static void Box_StartBoxInternal (const char *Width,const char *Title,
                                   void (*FunctionToDrawContextualIcons) (void),
-                                  const char *HelpLink,bool Closable,
+                                  const char *HelpLink,Box_Closable_t Closable,
                                   const char *ClassFrame);
 
 /*****************************************************************************/
@@ -68,12 +68,11 @@ static void Box_StartBoxInternal (const char *Width,const char *Title,
 
 void Box_StartBoxTable (const char *Width,const char *Title,
                         void (*FunctionToDrawContextualIcons) (void),
-                        const char *HelpLink,bool Closable,
+                        const char *HelpLink,Box_Closable_t Closable,
                         unsigned CellPadding)		// CellPadding must be 0, 1, 2, 5 or 10
   {
    Box_StartBox (Width,Title,FunctionToDrawContextualIcons,
-                 HelpLink,
-                 Closable);
+                 HelpLink,Closable);
    Tbl_StartTableWide (CellPadding);
   }
 
@@ -90,12 +89,11 @@ void Box_StartBoxTableShadow (const char *Width,const char *Title,
 
 void Box_StartBox (const char *Width,const char *Title,
                    void (*FunctionToDrawContextualIcons) (void),
-                   const char *HelpLink,bool Closable)
+                   const char *HelpLink,Box_Closable_t Closable)
   {
    Box_StartBoxInternal (Width,Title,
 			 FunctionToDrawContextualIcons,
-			 HelpLink,
-			 Closable,
+			 HelpLink,Closable,
 			 "FRAME");
   }
 
@@ -105,14 +103,13 @@ void Box_StartBoxShadow (const char *Width,const char *Title,
   {
    Box_StartBoxInternal (Width,Title,
                          FunctionToDrawContextualIcons,
-			 HelpLink,
-			 false,	// Not closable
+			 HelpLink,Box_NOT_CLOSABLE,
 			 "FRAME_SHADOW");
   }
 
 static void Box_StartBoxInternal (const char *Width,const char *Title,
                                   void (*FunctionToDrawContextualIcons) (void),
-                                  const char *HelpLink,bool Closable,
+                                  const char *HelpLink,Box_Closable_t Closable,
                                   const char *ClassFrame)
   {
    extern const char *Txt_Help;
@@ -121,7 +118,7 @@ static void Box_StartBoxInternal (const char *Width,const char *Title,
 
    /***** Start box container *****/
    fprintf (Gbl.F.Out,"<div class=\"FRAME_CONTAINER\"");
-   if (Closable)
+   if (Closable == Box_CLOSABLE)
      {
       /* Create unique id for alert */
       Act_SetUniqueId (IdFrame);
@@ -161,7 +158,7 @@ static void Box_StartBoxInternal (const char *Width,const char *Title,
                Gbl.Prefs.IconsURL,
                Txt_Help,Txt_Help);
 
-   if (Closable)	// Icon to close the box
+   if (Closable == Box_CLOSABLE)	// Icon to close the box
       fprintf (Gbl.F.Out,"<a href=\"\""
 			 " onclick=\"toggleDisplay('%s');return false;\" />"
                          "<div class=\"CONTEXT_OPT HLP_HIGHLIGHT\">"
diff --git a/swad_box.h b/swad_box.h
index da4dae56..28657d64 100644
--- a/swad_box.h
+++ b/swad_box.h
@@ -39,17 +39,23 @@
 /********************************* Public types ******************************/
 /*****************************************************************************/
 
+typedef enum
+  {
+   Box_NOT_CLOSABLE,
+   Box_CLOSABLE,
+  } Box_Closable_t;
+
 /*****************************************************************************/
 /****************************** Public prototypes ****************************/
 /*****************************************************************************/
 
 void Box_StartBoxTable (const char *Width,const char *Title,
                         void (*FunctionToDrawContextualIcons) (void),
-                        const char *HelpLink,bool Closable,
+                        const char *HelpLink,Box_Closable_t Closable,
                         unsigned CellPadding);
 void Box_StartBox (const char *Width,const char *Title,
                    void (*FunctionToDrawContextualIcons) (void),
-                   const char *HelpLink,bool Closable);
+                   const char *HelpLink,Box_Closable_t Closable);
 void Box_StartBoxShadow (const char *Width,const char *Title,
                          void (*FunctionToDrawContextualIcons) (void),
                          const char *HelpLink);
diff --git a/swad_calendar.c b/swad_calendar.c
index 65b8b094..5495c3a3 100644
--- a/swad_calendar.c
+++ b/swad_calendar.c
@@ -85,8 +85,7 @@ void Cal_PutIconsToSelectFirstDayOfWeek (void)
    extern const char *Txt_Calendar;
 
    Box_StartBox (NULL,Txt_Calendar,Cal_PutIconsFirstDayOfWeek,
-                 Hlp_PROFILE_Preferences_calendar,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_calendar,Box_NOT_CLOSABLE);
    Cal_ShowFormToSelFirstDayOfWeek (ActChg1stDay,NULL,"ICO25x25B");
    Box_EndBox ();
   }
@@ -317,8 +316,7 @@ static void Cal_DrawCalendar (Act_Action_t ActionSeeCalendar,
    /***** Start box *****/
    Box_StartBox (NULL,NULL,FunctionToDrawContextualIcons,
 	         PrintView ? NULL :
-	                     Hlp_Calendar,
-                 false);	// Not closable
+	                     Hlp_Calendar,Box_NOT_CLOSABLE);
    Lay_WriteHeaderClassPhoto (PrintView,false,
 			      Gbl.CurrentIns.Ins.InsCod,
 			      Gbl.CurrentDeg.Deg.DegCod,
diff --git a/swad_centre.c b/swad_centre.c
index 5304200f..6e0ee42d 100644
--- a/swad_centre.c
+++ b/swad_centre.c
@@ -168,9 +168,7 @@ void Ctr_SeeCtrWithPendingDegs (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Centres_with_pending_degrees,NULL,
-                         Hlp_SYSTEM_Hierarchy_pending,
-			 false,	// Not closable
-                         2);
+                         Hlp_SYSTEM_Hierarchy_pending,Box_NOT_CLOSABLE,2);
 
       /***** Wrtie heading *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -316,12 +314,10 @@ static void Ctr_Configuration (bool PrintView)
       /***** Start box *****/
       if (PrintView)
 	 Box_StartBox (NULL,NULL,NULL,
-		       NULL,
-		       false);	// Not closable
+		       NULL,Box_NOT_CLOSABLE);
       else
 	 Box_StartBox (NULL,NULL,Ctr_PutIconsToPrintAndUpload,
-		       Hlp_CENTRE_Information,
-		       false);	// Not closable
+		       Hlp_CENTRE_Information,Box_NOT_CLOSABLE);
 
       /***** Title *****/
       fprintf (Gbl.F.Out,"<div class=\"FRAME_TITLE FRAME_TITLE_BIG\">");
@@ -754,8 +750,7 @@ static void Ctr_ListCentres (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Centres_of_INSTITUTION_X,Gbl.CurrentIns.Ins.FullName);
    Box_StartBox (NULL,Gbl.Title,Ctr_PutIconsListCentres,
-                 Hlp_INSTITUTION_Centres,
-                 false);	// Not closable
+                 Hlp_INSTITUTION_Centres,Box_NOT_CLOSABLE);
 
    if (Gbl.Ctrs.Num)	// There are centres in the current institution
      {
@@ -947,8 +942,7 @@ void Ctr_EditCentres (void)
    sprintf (Gbl.Title,Txt_Centres_of_INSTITUTION_X,
             Gbl.CurrentIns.Ins.FullName);
    Box_StartBox (NULL,Gbl.Title,Ctr_PutIconsEditingCentres,
-                 Hlp_INSTITUTION_Centres,
-                 false);	// Not closable
+                 Hlp_INSTITUTION_Centres,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new centre *****/
    Ctr_PutFormToCreateCentre ();
@@ -2229,8 +2223,7 @@ void Ctr_RequestPhoto (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Photo,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Write help message *****/
    sprintf (Gbl.Alert.Txt,"%s: %s<br />"
@@ -2425,9 +2418,7 @@ static void Ctr_PutFormToCreateCentre (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_centre,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Ctr_PutHeadCentresForEdition ();
@@ -2903,9 +2894,7 @@ unsigned Ctr_ListCtrsFound (const char *Query)
                NumCtrs,(NumCtrs == 1) ? Txt_centre :
 	                                Txt_centres);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       Ctr_PutHeadCentresForSeeing (false);	// Order not selectable
diff --git a/swad_changelog.h b/swad_changelog.h
index 6ef7e144..96ed7368 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -239,13 +239,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.243 (2017-06-11)"
+#define Log_PLATFORM_VERSION	"SWAD 16.244 (2017-06-11)"
 #define CSS_FILE		"swad16.235.1.css"
 #define JS_FILE			"swad16.206.3.js"
 
 // Number of lines (includes comments but not blank lines) has been got with the following command:
 // nl swad*.c swad*.h css/swad*.css py/swad*.py js/swad*.js soap/swad*?.h sql/swad*.sql | tail -1
 /*
+        Version 16.244:   Jun 12, 2017	Code refactoring related with boxes. (221815 lines)
         Version 16.243:   Jun 12, 2017	Code refactoring related with boxes. (222174 lines)
         Version 16.242:   Jun 11, 2017	Code refactoring related with boxes. (222128 lines)
         Version 16.241.2: Jun 11, 2017	Changes in alignment of dates in statistics. (222131 lines)
diff --git a/swad_chat.c b/swad_chat.c
index 6a01aa48..f518c00d 100644
--- a/swad_chat.c
+++ b/swad_chat.c
@@ -125,8 +125,7 @@ void Cht_ShowListOfAvailableChatRooms (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Chat_rooms,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<ul class=\"LIST_LEFT\">");
 
    /***** Title of top level *****/
@@ -265,9 +264,7 @@ void Cht_ShowListOfChatRoomsWithUsrs (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Rooms_with_users,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_connected.c b/swad_connected.c
index 980b0220..d46c683e 100644
--- a/swad_connected.c
+++ b/swad_connected.c
@@ -100,8 +100,7 @@ void Con_ShowConnectedUsrs (void)
    sprintf (Gbl.Title,"%s<div id=\"connected_current_time\"></div>",
 	    Txt_Connected_users);
    Box_StartBox (NULL,Gbl.Title,Con_PutIconToUpdateConnected,
-		 Hlp_USERS_Connected,
-                 false);	// Not closable
+		 Hlp_USERS_Connected,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<script type=\"text/javascript\">"
                       "writeLocalDateHMSFromUTC('connected_current_time',%ld,"
                       "%u,',&nbsp;',null,false,true,0x7);"
@@ -163,8 +162,7 @@ void Con_ShowLastClicks (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Last_clicks_in_real_time,NULL,
-                 Hlp_USERS_Connected_last_clicks,
-                 false);	// Not closable
+                 Hlp_USERS_Connected_last_clicks,Box_NOT_CLOSABLE);
 
    /***** Get and show last clicks *****/
    fprintf (Gbl.F.Out,"<div id=\"lastclicks\""	// Used for AJAX based refresh
diff --git a/swad_country.c b/swad_country.c
index d92b9fac..dca1cacd 100644
--- a/swad_country.c
+++ b/swad_country.c
@@ -139,9 +139,7 @@ void Cty_SeeCtyWithPendingInss (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Countries_with_pending_institutions,NULL,
-                         Hlp_SYSTEM_Hierarchy_pending,
-			 false,	// Not closable
-                         2);
+                         Hlp_SYSTEM_Hierarchy_pending,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -248,12 +246,10 @@ static void Cty_Configuration (bool PrintView)
       /***** Start box *****/
       if (PrintView)
 	 Box_StartBox (NULL,NULL,NULL,
-		       NULL,
-		       false);	// Not closable
+		       NULL,Box_NOT_CLOSABLE);
       else
 	 Box_StartBox (NULL,NULL,Cty_PutIconToPrint,
-		       Hlp_COUNTRY_Information,
-		       false);	// Not closable
+		       Hlp_COUNTRY_Information,Box_NOT_CLOSABLE);
 
       /***** Title *****/
       fprintf (Gbl.F.Out,"<div class=\"FRAME_TITLE FRAME_TITLE_BIG\">");
@@ -519,9 +515,7 @@ void Cty_ListCountries2 (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Countries,Cty_PutIconsListCountries,
-                      Hlp_SYSTEM_Countries,
-		      false,	// Not closable
-                      2);
+                      Hlp_SYSTEM_Countries,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Cty_PutHeadCountriesForSeeing (true);	// Order selectable
@@ -955,8 +949,7 @@ void Cty_EditCountries (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Countries,Cty_PutIconToViewCountries,
-                 Hlp_SYSTEM_Countries,
-                 false);	// Not closable
+                 Hlp_SYSTEM_Countries,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new country *****/
    Cty_PutFormToCreateCountry ();
@@ -1942,9 +1935,7 @@ static void Cty_PutFormToCreateCountry (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_country,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Cty_PutHeadCountriesForEdition ();
@@ -2372,9 +2363,7 @@ unsigned Cty_ListCtysFound (const char *Query)
                NumCtys,NumCtys == 1 ? Txt_country :
 				      Txt_countries);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       Cty_PutHeadCountriesForSeeing (false);	// Order not selectable
diff --git a/swad_course.c b/swad_course.c
index 771e2b91..82d4ee76 100644
--- a/swad_course.c
+++ b/swad_course.c
@@ -199,12 +199,10 @@ static void Crs_Configuration (bool PrintView)
    /***** Start box *****/
    if (PrintView)
       Box_StartBox (NULL,NULL,NULL,
-		    NULL,
-		    false);	// Not closable
+		    NULL,Box_NOT_CLOSABLE);
    else
       Box_StartBox (NULL,NULL,Crs_PutIconToPrint,
-		    Hlp_COURSE_Information,
-		    false);	// Not closable
+		    Hlp_COURSE_Information,Box_NOT_CLOSABLE);
 
    /***** Title *****/
    fprintf (Gbl.F.Out,"<div class=\"FRAME_TITLE FRAME_TITLE_BIG\">");
@@ -551,8 +549,7 @@ static void Crs_WriteListMyCoursesToSelectOne (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_My_courses,NULL,
-                 Hlp_PROFILE_Courses,
-                 false);	// Not closable
+                 Hlp_PROFILE_Courses,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<ul class=\"LIST_LEFT\">");
 
    /***** Write link to platform *****/
@@ -1141,8 +1138,7 @@ static void Crs_ListCourses (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Courses_of_DEGREE_X,Gbl.CurrentDeg.Deg.ShrtName);
    Box_StartBox (NULL,Gbl.Title,Crs_PutIconsListCourses,
-                 Hlp_DEGREE_Courses,
-                 false);	// Not closable
+                 Hlp_DEGREE_Courses,Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentDeg.NumCrss)	// There are courses in the current degree
      {
@@ -1341,8 +1337,7 @@ void Crs_EditCourses (void)
    /***** Start box *****/
    sprintf (Gbl.Alert.Txt,Txt_Courses_of_DEGREE_X,Gbl.CurrentDeg.Deg.ShrtName);
    Box_StartBox (NULL,Gbl.Alert.Txt,Crs_PutIconToViewCourses,
-                 Hlp_DEGREE_Courses,
-                 false);	// Not closable
+                 Hlp_DEGREE_Courses,Box_NOT_CLOSABLE);
 
    /***** Put a form to create or request a new course *****/
    Crs_PutFormToCreateCourse ();
@@ -1647,9 +1642,7 @@ static void Crs_PutFormToCreateCourse (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_course,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Crs_PutHeadCoursesForEdition ();
@@ -3009,9 +3002,7 @@ void Crs_GetAndWriteCrssOfAUsr (const struct UsrData *UsrDat,Rol_Role_t Role)
      {
       /* Start box and table */
       Box_StartBoxTable ("100%",NULL,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /* Heading row */
       sprintf (Gbl.Title,Txt_USER_in_COURSE,
@@ -3096,9 +3087,7 @@ unsigned Crs_ListCrssFound (const char *Query)
                NumCrss,(NumCrss == 1) ? Txt_course :
 	                                Txt_courses);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Heading row *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -3335,8 +3324,7 @@ void Crs_AskRemoveOldCrss (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Eliminate_old_courses,NULL,
-                 Hlp_SYSTEM_Hierarchy_eliminate_old_courses,
-                 false);	// Not closable
+                 Hlp_SYSTEM_Hierarchy_eliminate_old_courses,Box_NOT_CLOSABLE);
 
    /***** Form to request number of months without clicks *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">%s&nbsp;"
diff --git a/swad_date.c b/swad_date.c
index 787d672f..7d3604f3 100644
--- a/swad_date.c
+++ b/swad_date.c
@@ -104,8 +104,7 @@ void Dat_PutBoxToSelectDateFormat (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Dates,Dat_PutIconsDateFormat,
-                 Hlp_PROFILE_Preferences_dates,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_dates,Box_NOT_CLOSABLE);
 
    /***** Form with list of options *****/
    Act_FormStart (ActChgDatFmt);
diff --git a/swad_degree.c b/swad_degree.c
index 6f9376ba..d7d919e4 100644
--- a/swad_degree.c
+++ b/swad_degree.c
@@ -171,9 +171,7 @@ void Deg_SeeDegWithPendingCrss (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Degrees_with_pending_courses,NULL,
-                         Hlp_SYSTEM_Hierarchy_pending,
-			 false,	// Not closable
-                         2);
+                         Hlp_SYSTEM_Hierarchy_pending,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -304,12 +302,10 @@ static void Deg_Configuration (bool PrintView)
       /***** Start box *****/
       if (PrintView)
 	 Box_StartBox (NULL,NULL,NULL,
-		       NULL,
-		       false);	// Not closable
+		       NULL,Box_NOT_CLOSABLE);
       else
 	 Box_StartBox (NULL,NULL,Deg_PutIconsToPrintAndUpload,
-		       Hlp_DEGREE_Information,
-		       false);	// Not closable
+		       Hlp_DEGREE_Information,Box_NOT_CLOSABLE);
 
       /***** Title *****/
       fprintf (Gbl.F.Out,"<div class=\"FRAME_TITLE FRAME_TITLE_BIG\">");
@@ -948,9 +944,7 @@ static void Deg_PutFormToCreateDegree (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_degree,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Deg_PutHeadDegreesForEdition ();
@@ -1180,8 +1174,7 @@ static void Deg_ListDegrees (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Degrees_of_CENTRE_X,Gbl.CurrentCtr.Ctr.ShrtName);
    Box_StartBox (NULL,Gbl.Title,Deg_PutIconsListDegrees,
-                 Hlp_CENTRE_Degrees,
-                 false);	// Not closable
+                 Hlp_CENTRE_Degrees,Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentCtr.Ctr.Degs.Num)	// There are degrees in the current centre
      {
@@ -1360,8 +1353,7 @@ void Deg_EditDegrees (void)
    sprintf (Gbl.Title,Txt_Degrees_of_CENTRE_X,
             Gbl.CurrentCtr.Ctr.FullName);
    Box_StartBox (NULL,Gbl.Title,Deg_PutIconsEditingDegrees,
-                 Hlp_CENTRE_Degrees,
-                 false);	// Not closable
+                 Hlp_CENTRE_Degrees,Box_NOT_CLOSABLE);
 
    if (Gbl.Degs.DegTypes.Num)
      {
@@ -2581,9 +2573,7 @@ unsigned Deg_ListDegsFound (const char *Query)
                NumDegs,(NumDegs == 1) ? Txt_degree :
         	                        Txt_degrees);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       Deg_PutHeadDegreesForSeeing ();
diff --git a/swad_degree_type.c b/swad_degree_type.c
index e1dbe043..b5930953 100644
--- a/swad_degree_type.c
+++ b/swad_degree_type.c
@@ -211,13 +211,11 @@ static void DT_ListDegreeTypes (Act_Action_t NextAction,DT_Order_t SelectedOrder
      {
       case ActSeeDegTyp:
 	 Box_StartBox (NULL,Txt_Types_of_degree,DT_PutIconsListDegTypes,
-		       Hlp_CENTRE_DegreeTypes,
-                       false);	// Not closable
+		       Hlp_CENTRE_DegreeTypes,Box_NOT_CLOSABLE);
 	 break;
       case ActSeeUseGbl:
 	 Box_StartBox (NULL,Txt_Types_of_degree,DT_PutIconToEditDegTypes,
-		       Hlp_STATS_Figures_types_of_degree,
-                       false);	// Not closable
+		       Hlp_STATS_Figures_types_of_degree,Box_NOT_CLOSABLE);
 	 break;
       default:	// Bad call
 	 return;
@@ -265,8 +263,7 @@ void DT_EditDegreeTypes (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Types_of_degree,DT_PutIconToViewDegreeTypesWhenEditing,
-                 Hlp_CENTRE_DegreeTypes_edit,
-                 false);	// Not closable
+                 Hlp_CENTRE_DegreeTypes_edit,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new degree type *****/
    DT_PutFormToCreateDegreeType ();
@@ -437,9 +434,7 @@ void DT_PutFormToCreateDegreeType (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_type_of_degree,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    DT_PutHeadDegreeTypesForEdition ();
diff --git a/swad_department.c b/swad_department.c
index 70d1a8a4..c88148c5 100644
--- a/swad_department.c
+++ b/swad_department.c
@@ -104,9 +104,7 @@ void Dpt_SeeDepts (void)
       Box_StartBoxTable (NULL,Txt_Departments,
                          Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ? Dpt_PutIconToEditDpts :
                         	                                  NULL,
-                         Hlp_INSTITUTION_Departments,
-			 false,	// Not closable
-                         2);
+                         Hlp_INSTITUTION_Departments,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>");
@@ -491,9 +489,7 @@ static void Dpt_ListDepartmentsForEdition (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Departments,NULL,
-                      Hlp_INSTITUTION_Departments_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_INSTITUTION_Departments_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Dpt_PutHeadDepartments ();
@@ -896,9 +892,7 @@ static void Dpt_PutFormToCreateDepartment (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_department,NULL,
-                      Hlp_INSTITUTION_Departments_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_INSTITUTION_Departments_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_duplicate.c b/swad_duplicate.c
index 068a6837..84d4467d 100644
--- a/swad_duplicate.c
+++ b/swad_duplicate.c
@@ -142,8 +142,7 @@ void Dup_ListDuplicateUsrs (void)
 
    /***** Start box with list of possible duplicate users *****/
    Box_StartBox (NULL,Txt_Possibly_duplicate_users,NULL,
-                 Hlp_USERS_Duplicates_possibly_duplicate_users,
-                 false);	// Not closable
+                 Hlp_USERS_Duplicates_possibly_duplicate_users,Box_NOT_CLOSABLE);
 
    /***** Build query *****/
    sprintf (Query,"SELECT UsrCod,COUNT(*) AS N,MIN(UNIX_TIMESTAMP(InformTime)) AS T"
@@ -262,8 +261,7 @@ static void Dup_ListSimilarUsrs (void)
 
    /***** Start box with list of possible duplicate users *****/
    Box_StartBox (NULL,Txt_Similar_users,NULL,
-                 Hlp_USERS_Duplicates_similar_users,
-                 false);	// Not closable
+                 Hlp_USERS_Duplicates_similar_users,Box_NOT_CLOSABLE);
 
    /***** Build query *****/
    if (Gbl.Usrs.Other.UsrDat.Surname1[0] &&
diff --git a/swad_enrolment.c b/swad_enrolment.c
index 2e336b93..ea4dcc91 100644
--- a/swad_enrolment.c
+++ b/swad_enrolment.c
@@ -379,8 +379,7 @@ void Enr_ReqAcceptRegisterInCrs (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Enrolment,NULL,
-                 Hlp_USERS_SignUp_confirm_enrolment,
-                 false);	// Not closable
+                 Hlp_USERS_SignUp_confirm_enrolment,Box_NOT_CLOSABLE);
 
    /***** Show message *****/
    sprintf (Gbl.Alert.Txt,Txt_A_teacher_or_administrator_has_enroled_you_as_X_into_the_course_Y,
@@ -708,8 +707,7 @@ static void Enr_ShowFormRegRemSeveralUsrs (Rol_Role_t Role)
 
    /***** Start box *****/
    Box_StartBox (NULL,Title,NULL,
-	         Hlp_USERS_Administration_administer_multiple_users,
-                 false);	// Not closable
+	         Hlp_USERS_Administration_administer_multiple_users,Box_NOT_CLOSABLE);
 
    /***** Step 1: List of students to be enroled / removed *****/
    fprintf (Gbl.F.Out,"<div class=\"%s LEFT_MIDDLE\">"
@@ -799,8 +797,7 @@ void Enr_AskRemoveOldUsrs (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Eliminate_old_users,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Form to request number of months without clicks *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">%s&nbsp;",
@@ -1856,8 +1853,7 @@ void Enr_AskRemAllStdsThisCrs (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Remove_all_students,NULL,
-                 Hlp_USERS_Administration_remove_all_students,
-                 false);	// Not closable
+                 Hlp_USERS_Administration_remove_all_students,Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentCrs.Crs.NumUsrs[Rol_STD])
      {
@@ -2309,8 +2305,7 @@ static void Enr_ShowEnrolmentRequestsGivenRoles (unsigned RolesSelected)
 
    /***** Start box *****/
    Box_StartBox ("100%",Txt_Enrolment_requests,NULL,
-                 Hlp_USERS_Requests,
-                 false);	// Not closable
+                 Hlp_USERS_Requests,Box_NOT_CLOSABLE);
 
    /***** Selection of scope and roles *****/
    /* Start form and table */
@@ -3128,8 +3123,7 @@ static void Enr_ReqAnotherUsrIDToRegisterRemove (Rol_Role_t Role)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Administer_one_user,NULL,
-                 Hlp_USERS_Administration_administer_one_user,
-                 false);	// Not closable
+                 Hlp_USERS_Administration_administer_one_user,Box_NOT_CLOSABLE);
 
    /***** Write form to request another user's ID *****/
    switch (Role)
diff --git a/swad_exam.c b/swad_exam.c
index 5456e7c6..29c0f079 100644
--- a/swad_exam.c
+++ b/swad_exam.c
@@ -653,8 +653,7 @@ static void Exa_ListExamAnnouncements (Exa_TypeViewExamAnnouncement_t TypeViewEx
 						   Txt_Announcements_of_exams,
 		 ICanEdit ? Exa_PutIconToCreateNewExamAnnouncement :
 			    NULL,
-		 Hlp_ASSESSMENT_Announcements,
-                 false);	// Not closable
+		 Hlp_ASSESSMENT_Announcements,Box_NOT_CLOSABLE);
 
    /***** The result of the query may be empty *****/
    if (!NumExaAnns)
@@ -1077,7 +1076,7 @@ static void Exa_ShowExamAnnouncement (Exa_TypeViewExamAnnouncement_t TypeViewExa
                  TypeViewExamAnnouncement == Exa_FORM_VIEW ? ((Gbl.ExamAnns.ExaDat.ExaCod > 0) ? Hlp_ASSESSMENT_Announcements_edit_announcement :
                                                                                                  Hlp_ASSESSMENT_Announcements_new_announcement) :
                                                              NULL,
-                 false);	// Not closable
+                 Box_NOT_CLOSABLE);
 
    if (TypeViewExamAnnouncement == Exa_FORM_VIEW)
      {
diff --git a/swad_file_browser.c b/swad_file_browser.c
index 286104ea..198f618d 100644
--- a/swad_file_browser.c
+++ b/swad_file_browser.c
@@ -3121,8 +3121,7 @@ void Brw_AskEditWorksCrs (void)
 
    /***** Draw class photos to select users *****/
    Box_StartBox (NULL,Txt_Users,NULL,
-                 Hlp_FILES_Homework_for_teachers,
-                 false);	// Not closable
+                 Hlp_FILES_Homework_for_teachers,Box_NOT_CLOSABLE);
 
    /***** Show form to select the groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActReqAsgWrkCrs);
@@ -3219,9 +3218,7 @@ static void Brw_ShowFileBrowsersAsgWrkCrs (void)
       /***** Start box and table *****/
       Box_StartBoxTable ("100%",Txt_Assignments_and_other_works,
                          Brw_PutIconShowFigure,
-                         Hlp_FILES_Homework_for_teachers,
-			 false,	// Not closable
-                         0);
+                         Hlp_FILES_Homework_for_teachers,Box_NOT_CLOSABLE,0);
 
       /***** List the assignments and works of the selected users *****/
       Ptr = Gbl.Usrs.Select[Rol_UNK];
@@ -3691,8 +3688,7 @@ static void Brw_ShowFileBrowser (void)
    Lay_StartSection (FileBrowserSectionId);
    Box_StartBox ("100%",Brw_TitleOfFileBrowser[Gbl.FileBrowser.Type],
                  Brw_PutIconsFileBrowser,
-                 Brw_HelpOfFileBrowser[Gbl.FileBrowser.Type],
-                 false);	// Not closable
+                 Brw_HelpOfFileBrowser[Gbl.FileBrowser.Type],Box_NOT_CLOSABLE);
 
    /***** Subtitle *****/
    Brw_WriteSubtitleOfFileBrowser ();
@@ -7986,8 +7982,7 @@ static void Brw_PutFormToCreateAFolder (const char FileNameToShow[NAME_MAX + 1])
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Create_folder,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
    sprintf (Gbl.Alert.Txt,Txt_You_can_create_a_new_folder_inside_the_folder_X,
 	    FileNameToShow);
    Ale_ShowAlert (Ale_INFO,Gbl.Alert.Txt);
@@ -8025,8 +8020,7 @@ static void Brw_PutFormToUploadFilesUsingDropzone (const char *FileNameToShow)
    /***** Start box *****/
    fprintf (Gbl.F.Out,"<div id=\"dropzone-upload\">");
    Box_StartBox ("95%",Txt_Upload_files,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_upload_new_files_to_the_folder_X,
@@ -8088,8 +8082,7 @@ static void Brw_PutFormToUploadOneFileClassic (const char *FileNameToShow)
    /***** Start box *****/
    fprintf (Gbl.F.Out,"<div id=\"classic-upload\" style=\"display:none;\">");
    Box_StartBox (NULL,Txt_Upload_file,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_upload_a_new_file_to_the_folder_X,
@@ -8132,8 +8125,7 @@ static void Brw_PutFormToPasteAFileOrFolder (const char *FileNameToShow)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Paste,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_make_a_file_copy_to_the_folder_X,
@@ -8169,8 +8161,7 @@ static void Brw_PutFormToCreateALink (const char *FileNameToShow)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Create_link,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Help message *****/
    sprintf (Gbl.Alert.Txt,Txt_or_you_can_create_a_new_link_inside_the_folder_X,
@@ -11345,9 +11336,7 @@ unsigned Brw_ListDocsFound (const char *Query,
                NumDocs,(NumDocs == 1) ? TitleSingular :
         	                        TitlePlural);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -11705,8 +11694,7 @@ void Brw_AskRemoveOldFiles (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Remove_old_files,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Form to request number of months (to remove files older) *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">%s&nbsp;",
diff --git a/swad_follow.c b/swad_follow.c
index 63d38a0b..a358f1e4 100644
--- a/swad_follow.c
+++ b/swad_follow.c
@@ -133,9 +133,7 @@ void Fol_SuggestUsrsToFollowMainZone (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable ("560px",Txt_Who_to_follow,Fol_PutIconsWhoToFollow,
-                         Hlp_SOCIAL_Profiles_who_to_follow,
-			 false,	// Not closable
-                         2);
+                         Hlp_SOCIAL_Profiles_who_to_follow,Box_NOT_CLOSABLE,2);
 
       /***** Initialize structure with user's data *****/
       Usr_UsrDataConstructor (&UsrDat);
@@ -689,9 +687,7 @@ static void Fol_ListFollowingUsr (struct UsrData *UsrDat)
 
          /***** Start box and table *****/
 	 Box_StartBoxTable ("560px",Txt_Following,NULL,
-	                    NULL,
-			    false,	// Not closable
-	                    2);
+	                    NULL,Box_NOT_CLOSABLE,2);
 
 	 for (NumUsr = 0;
 	      NumUsr < NumUsrs;
@@ -775,9 +771,7 @@ static void Fol_ListFollowersUsr (struct UsrData *UsrDat)
 
          /***** Start box and table *****/
 	 Box_StartBoxTable ("560px",Txt_Followers,NULL,
-	                    NULL,
-			    false,	// Not closable
-	                    2);
+	                    NULL,Box_NOT_CLOSABLE,2);
 
 	 for (NumUsr = 0;
 	      NumUsr < NumUsrs;
diff --git a/swad_forum.c b/swad_forum.c
index 85ca6885..baacf312 100644
--- a/swad_forum.c
+++ b/swad_forum.c
@@ -1011,8 +1011,7 @@ static void For_ShowPostsOfAThread (Ale_AlertType_t AlertType,const char *Messag
    /***** Start box *****/
    sprintf (FrameTitle,"%s: %s",Txt_Thread,Thr.Subject);
    Box_StartBox (NULL,FrameTitle,For_PutIconNewPost,
-                 Hlp_SOCIAL_Forums_posts,
-                 false);	// Not closable
+                 Hlp_SOCIAL_Forums_posts,Box_NOT_CLOSABLE);
 
    /***** Get posts of a thread from database *****/
    sprintf (Query,"SELECT PstCod,UNIX_TIMESTAMP(CreatTime)"
@@ -1608,8 +1607,7 @@ static void For_ShowForumList (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Forums,For_PutIconsForums,
-                 Hlp_SOCIAL_Forums,
-                 false);	// Not closable
+                 Hlp_SOCIAL_Forums,Box_NOT_CLOSABLE);
 
    /***** Put a form to select which forums *****/
    For_PutFormWhichForums ();
@@ -2575,8 +2573,7 @@ static void For_ShowForumThreadsHighlightingOneThread (long ThrCodHighlighted,
    /***** Start box for threads of this forum *****/
    sprintf (FrameTitle,"%s: %s",Txt_Forum,ForumName);
    Box_StartBox (NULL,FrameTitle,For_PutIconNewThread,
-		 Hlp_SOCIAL_Forums_threads,
-                 false);	// Not closable
+		 Hlp_SOCIAL_Forums_threads,Box_NOT_CLOSABLE);
 
    /***** List the threads *****/
    if (NumThrs)
@@ -3861,12 +3858,10 @@ static void For_WriteFormForumPst (bool IsReply,const char *Subject)
    /***** Start box *****/
    if (IsReply)
       Box_StartBox (NULL,Txt_New_post,NULL,
-		    Hlp_SOCIAL_Forums_new_post,
-		    false);	// Not closable
+		    Hlp_SOCIAL_Forums_new_post,Box_NOT_CLOSABLE);
    else
       Box_StartBox (NULL,Txt_New_thread,NULL,
-		    Hlp_SOCIAL_Forums_new_thread,
-		    false);	// Not closable
+		    Hlp_SOCIAL_Forums_new_thread,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    if (IsReply)	// Form to write a reply to a post of an existing thread
diff --git a/swad_group.c b/swad_group.c
index 1c1facd6..fa20e9d0 100644
--- a/swad_group.c
+++ b/swad_group.c
@@ -268,8 +268,7 @@ static void Grp_EditGroupTypes (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Types_of_group,Grp_PutIconsEditingGroupTypes,
-                 Hlp_USERS_Groups,
-                 false);	// Not closable
+                 Hlp_USERS_Groups,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new group type *****/
    Grp_PutFormToCreateGroupType ();
@@ -300,8 +299,7 @@ static void Grp_EditGroups (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Groups,Grp_PutIconsEditingGroups,
-                 Hlp_USERS_Groups,
-                 false);	// Not closable
+                 Hlp_USERS_Groups,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new group *****/
    Grp_PutFormToCreateGroup ();
@@ -367,8 +365,7 @@ void Grp_ShowFormToSelectSeveralGroups (Act_Action_t NextAction)
       /***** Start box *****/
       Box_StartBox (NULL,Txt_Groups,ICanEdit ? Grp_PutIconToEditGroups :
 				               NULL,
-		    Hlp_USERS_Groups,
-                    true);	// Closable
+		    Hlp_USERS_Groups,Box_CLOSABLE);
 
       /***** Start form to update the students listed
 	     depending on the groups selected *****/
@@ -1727,8 +1724,7 @@ void Grp_ShowLstGrpsToChgMyGrps (void)
    /***** Start box *****/
    Box_StartBox (NULL,Txt_My_groups,ICanEdit ? Grp_PutIconToEditGroups :
                                                NULL,
-                 Hlp_USERS_Groups,
-                 false);	// Not closable
+                 Hlp_USERS_Groups,Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentCrs.Grps.NumGrps) // This course has groups
      {
@@ -1944,9 +1940,7 @@ void Grp_ShowLstGrpsToChgOtherUsrsGrps (long UsrCod)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Groups,NULL,
-                      Hlp_USERS_Groups,
-		      false,	// Not closable
-                      0);
+                      Hlp_USERS_Groups,Box_NOT_CLOSABLE,0);
 
    /***** List to select the groups the user belongs to *****/
    for (NumGrpTyp = 0;
@@ -2348,9 +2342,7 @@ static void Grp_PutFormToCreateGroupType (void)
 
    /***** Start box *****/
    Box_StartBoxTable (NULL,Txt_New_type_of_group,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Grp_WriteHeadingGroupTypes ();
@@ -2464,9 +2456,7 @@ static void Grp_PutFormToCreateGroup (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_group,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Grp_WriteHeadingGroups ();
diff --git a/swad_help.c b/swad_help.c
index 41491bd2..552e8d1c 100644
--- a/swad_help.c
+++ b/swad_help.c
@@ -130,9 +130,7 @@ void Hlp_ShowHelpWhatWouldYouLikeToDo (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_What_would_you_like_to_do,NULL,
-                      NULL,
-		      true,	// Closable
-                      2);
+                      NULL,Box_CLOSABLE,2);
 
    if (Gbl.Usrs.Me.Logged)		// I am logged
      {
diff --git a/swad_holiday.c b/swad_holiday.c
index d168a67d..8efd4fa7 100644
--- a/swad_holiday.c
+++ b/swad_holiday.c
@@ -104,8 +104,7 @@ void Hld_SeeHolidays (void)
       Box_StartBox (NULL,Txt_Holidays,
                     Gbl.Usrs.Me.Role.Logged >= Rol_INS_ADM ? Hld_PutIconToEditHlds :
                                                              NULL,
-                    Hlp_INSTITUTION_Holidays,
-                    false);	// Not closable
+                    Hlp_INSTITUTION_Holidays,Box_NOT_CLOSABLE);
       if (Gbl.Hlds.Num)
 	 {
          Tbl_StartTableWideMargin (2);
@@ -504,9 +503,7 @@ static void Hld_ListHolidaysForEdition (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Holidays,NULL,
-                      Hlp_INSTITUTION_Holidays_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_INSTITUTION_Holidays_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Hld_PutHeadHolidays ();
@@ -965,9 +962,7 @@ static void Hld_PutFormToCreateHoliday (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_holiday,NULL,
-                      Hlp_INSTITUTION_Holidays_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_INSTITUTION_Holidays_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_icon.c b/swad_icon.c
index 5566753f..93ce0ede 100644
--- a/swad_icon.c
+++ b/swad_icon.c
@@ -78,8 +78,7 @@ void Ico_PutIconsToSelectIconSet (void)
    Ico_IconSet_t IconSet;
 
    Box_StartBox (NULL,Txt_Icons,Ico_PutIconsIconSet,
-                 Hlp_PROFILE_Preferences_icons,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_icons,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"PREF_CONTAINER\">");
    for (IconSet = (Ico_IconSet_t) 0;
 	IconSet < Ico_NUM_ICON_SETS;
diff --git a/swad_indicator.c b/swad_indicator.c
index debaaf8d..11d6404b 100644
--- a/swad_indicator.c
+++ b/swad_indicator.c
@@ -108,8 +108,7 @@ void Ind_ReqIndicatorsCourses (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Indicators_of_courses,NULL,
-                 Hlp_STATS_Indicators,
-                 false);	// Not closable
+                 Hlp_STATS_Indicators,Box_NOT_CLOSABLE);
 
    /***** Form to update indicators *****/
    /* Start form and table */
diff --git a/swad_info.c b/swad_info.c
index a391ca65..3b5fe757 100644
--- a/swad_info.c
+++ b/swad_info.c
@@ -445,8 +445,7 @@ void Inf_ShowInfo (void)
       Box_StartBox ("100%",Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],
 		    ICanEdit ? Inf_PutIconToEditInfo :
 			       NULL,
-		    Help[Gbl.CurrentCrs.Info.Type],
-                    false);	// Not closable
+		    Help[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
       Ale_ShowAlert (Ale_INFO,Txt_No_information);
       if (ICanEdit)
 	 Inf_PutButtonToEditInfo ();
@@ -591,8 +590,7 @@ void Inf_WriteMsgYouMustReadInfo (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Required_reading,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Write message *****/
    Ale_ShowAlert (Ale_WARNING,Txt_You_should_read_the_following_information);
@@ -1035,8 +1033,7 @@ static void Inf_ShowPage (const char *URL)
    Box_StartBox (NULL,Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],
                  ICanEdit ? Inf_PutIconToEditInfo :
                             NULL,
-                 Help[Gbl.CurrentCrs.Info.Type],
-                 false);	// Not closable
+                 Help[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
 
    /***** Link to view in a new window *****/
    fprintf (Gbl.F.Out,"<a href=\"%s\" target=\"_blank\" class=\"%s\">",
@@ -1120,9 +1117,7 @@ void Inf_FormsToSelSendInfo (void)
    /***** Form to choice between alternatives *****/
    /* Start box and table */
    Box_StartBoxTable (NULL,Txt_Source_of_information,Inf_PutIconToViewInfo,
-                      HelpEdit[Gbl.CurrentCrs.Info.Type],
-		      false,	// Not closable
-                      4);
+                      HelpEdit[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE,4);
 
    /* Options */
    for (InfoSrc = (Inf_InfoSrc_t) 0;
@@ -1792,8 +1787,7 @@ static bool Inf_CheckAndShowPlainTxt (void)
       Box_StartBox (NULL,Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],
                     ICanEdit ? Inf_PutIconToEditInfo :
                                NULL,
-                    Help[Gbl.CurrentCrs.Info.Type],
-                    false);	// Not closable
+                    Help[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
 
       if (Gbl.CurrentCrs.Info.Type == Inf_INTRODUCTION ||
           Gbl.CurrentCrs.Info.Type == Inf_TEACHING_GUIDE)
@@ -1877,8 +1871,7 @@ static bool Inf_CheckAndShowRichTxt (void)
       Box_StartBox (NULL,Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],
                     ICanEdit ? Inf_PutIconToEditInfo :
                                NULL,
-                    Help[Gbl.CurrentCrs.Info.Type],
-                    false);	// Not closable
+                    Help[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
 
       if (Gbl.CurrentCrs.Info.Type == Inf_INTRODUCTION ||
           Gbl.CurrentCrs.Info.Type == Inf_TEACHING_GUIDE)
@@ -2064,8 +2057,7 @@ void Inf_EditPlainTxtInfo (void)
    /***** Start form and box *****/
    Act_FormStart (Inf_ActionsRcvPlaTxtInfo[Gbl.CurrentCrs.Info.Type]);
    Box_StartBox (NULL,Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],NULL,
-                 HelpEdit[Gbl.CurrentCrs.Info.Type],
-                 false);	// Not closable
+                 HelpEdit[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentCrs.Info.Type == Inf_INTRODUCTION ||
        Gbl.CurrentCrs.Info.Type == Inf_TEACHING_GUIDE)
@@ -2116,8 +2108,7 @@ void Inf_EditRichTxtInfo (void)
    /***** Start form and box *****/
    Act_FormStart (Inf_ActionsRcvRchTxtInfo[Gbl.CurrentCrs.Info.Type]);
    Box_StartBox (NULL,Txt_INFO_TITLE[Gbl.CurrentCrs.Info.Type],NULL,
-                 HelpEdit[Gbl.CurrentCrs.Info.Type],
-                 false);	// Not closable
+                 HelpEdit[Gbl.CurrentCrs.Info.Type],Box_NOT_CLOSABLE);
 
    if (Gbl.CurrentCrs.Info.Type == Inf_INTRODUCTION ||
        Gbl.CurrentCrs.Info.Type == Inf_TEACHING_GUIDE)
diff --git a/swad_institution.c b/swad_institution.c
index a16bff80..5c2b508a 100644
--- a/swad_institution.c
+++ b/swad_institution.c
@@ -153,9 +153,7 @@ void Ins_SeeInsWithPendingCtrs (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Institutions_with_pending_centres,NULL,
-                         Hlp_SYSTEM_Hierarchy_pending,
-			 false,	// Not closable
-                         2);
+                         Hlp_SYSTEM_Hierarchy_pending,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -313,12 +311,10 @@ static void Ins_Configuration (bool PrintView)
       /***** Start box *****/
       if (PrintView)
 	 Box_StartBox (NULL,NULL,NULL,
-		       NULL,
-		       false);	// Not closable
+		       NULL,Box_NOT_CLOSABLE);
       else
 	 Box_StartBox (NULL,NULL,Ins_PutIconsToPrintAndUpload,
-		       Hlp_INSTITUTION_Information,
-		       false);	// Not closable
+		       Hlp_INSTITUTION_Information,Box_NOT_CLOSABLE);
 
       /***** Title *****/
       fprintf (Gbl.F.Out,"<div class=\"FRAME_TITLE FRAME_TITLE_BIG\">");
@@ -676,8 +672,7 @@ static void Ins_ListInstitutions (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Institutions_of_COUNTRY_X,Gbl.CurrentCty.Cty.Name[Gbl.Prefs.Language]);
    Box_StartBox (NULL,Gbl.Title,Ins_PutIconsListInstitutions,
-                 Hlp_COUNTRY_Institutions,
-                 false);	// Not closable
+                 Hlp_COUNTRY_Institutions,Box_NOT_CLOSABLE);
 
    if (Gbl.Inss.Num)	// There are institutions in the current country
      {
@@ -927,8 +922,7 @@ void Ins_EditInstitutions (void)
    sprintf (Gbl.Title,Txt_Institutions_of_COUNTRY_X,
             Gbl.CurrentCty.Cty.Name[Gbl.Prefs.Language]);
    Box_StartBox (NULL,Gbl.Title,Ins_PutIconToViewInstitutions,
-                 Hlp_COUNTRY_Institutions,
-                 false);	// Not closable
+                 Hlp_COUNTRY_Institutions,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new institution *****/
    Ins_PutFormToCreateInstitution ();
@@ -2164,9 +2158,7 @@ static void Ins_PutFormToCreateInstitution (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_institution,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Ins_PutHeadInstitutionsForEdition ();
@@ -2526,9 +2518,7 @@ unsigned Ins_ListInssFound (const char *Query)
                NumInss,NumInss == 1 ? Txt_institution :
 				      Txt_institutions);
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Write heading *****/
       Ins_PutHeadInstitutionsForSeeing (false);	// Order not selectable
diff --git a/swad_layout.c b/swad_layout.c
index 6bf92ab7..459f6446 100644
--- a/swad_layout.c
+++ b/swad_layout.c
@@ -1499,9 +1499,7 @@ void Lay_AdvertisementMobile (void)
 
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,NULL,NULL,
-                         NULL,
-			 false,	// Not closable
-                         8);
+                         NULL,Box_NOT_CLOSABLE,8);
 
       /***** Show advertisement *****/
       fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_link.c b/swad_link.c
index 6f276257..dcffc762 100644
--- a/swad_link.c
+++ b/swad_link.c
@@ -115,8 +115,7 @@ void Lnk_SeeLinks (void)
    Box_StartBox (NULL,Txt_Links,
 		 Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ? Lnk_PutIconToEditLinks :
 							  NULL,
-		 Hlp_SYSTEM_Links,
-                 false);	// Not closable
+		 Hlp_SYSTEM_Links,Box_NOT_CLOSABLE);
 
    /***** Write all links *****/
    if (Gbl.Links.Num)	// There are links
@@ -231,8 +230,7 @@ void Lnk_EditLinks (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Links,Lnk_PutIconToViewLinks,
-                 Hlp_SYSTEM_Links_edit,
-                 false);	// Not closable
+                 Hlp_SYSTEM_Links_edit,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new link *****/
    Lnk_PutFormToCreateLink ();
@@ -710,9 +708,7 @@ static void Lnk_PutFormToCreateLink (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_link,NULL,
-                      Hlp_SYSTEM_Links_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_SYSTEM_Links_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Lnk_PutHeadLinks ();
diff --git a/swad_logo.c b/swad_logo.c
index 09135926..cec9c8cd 100644
--- a/swad_logo.c
+++ b/swad_logo.c
@@ -285,8 +285,7 @@ void Log_RequestLogo (Sco_Scope_t Scope)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Logo,NULL,
-                 NULL,
-                 false);	// Not closable
+                 NULL,Box_NOT_CLOSABLE);
 
    /***** Write help message *****/
    sprintf (Gbl.Alert.Txt,Txt_You_can_send_a_file_with_an_image_in_PNG_format_transparent_background_and_size_X_Y,
diff --git a/swad_mail.c b/swad_mail.c
index 12a09818..a9a5e4fc 100644
--- a/swad_mail.c
+++ b/swad_mail.c
@@ -112,9 +112,7 @@ void Mai_SeeMailDomains (void)
    Box_StartBoxTable (NULL,Txt_Email_domains_allowed_for_notifications,
                       Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ? Mai_PutIconToEditMailDomains :
                                                                NULL,
-                      Hlp_MESSAGES_Domains,
-		      false,	// Not closable
-                      2);
+                      Hlp_MESSAGES_Domains,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>");
@@ -454,9 +452,7 @@ static void Mai_ListMailDomainsForEdition (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Email_domains_allowed_for_notifications,NULL,
-                      Hlp_MESSAGES_Domains_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_MESSAGES_Domains_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Mai_PutHeadMailDomains ();
@@ -724,9 +720,7 @@ static void Mai_PutFormToCreateMailDomain (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_email_domain,NULL,
-                      Hlp_MESSAGES_Domains_edit,
-		      false,	// Not closable
-                      2);
+                      Hlp_MESSAGES_Domains_edit,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -894,10 +888,8 @@ void Mai_ListEmails (void)
    Usr_GetListUsrs (Sco_SCOPE_CRS,Rol_STD);
 
    /***** Start the box used to list the emails *****/
-   Box_StartBox (NULL,Txt_Students_who_have_accepted_and_who_have_email,
-		 NULL,
-		 Hlp_MESSAGES_Email,
-                 false);	// Not closable
+   Box_StartBox (NULL,Txt_Students_who_have_accepted_and_who_have_email,NULL,
+		 Hlp_MESSAGES_Email,Box_NOT_CLOSABLE);
 
    /***** Form to select groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActMaiStd);
@@ -1194,8 +1186,7 @@ void Mai_ShowFormOthEmail (void)
 	{
 	 /***** Start box *****/
          Box_StartBox (NULL,Txt_Email,NULL,
-                       NULL,
-                       false);	// Not closable
+                       NULL,Box_NOT_CLOSABLE);
 
 	 /***** Show user's record *****/
 	 Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_LIST,
@@ -1635,8 +1626,7 @@ void Mai_PutButtonToCheckEmailAddress (void)
 
    /***** Box with button to check email address *****/
    Box_StartBox (NULL,Txt_Email_unconfirmed,NULL,
-                 Hlp_PROFILE_Account_email,
-                 true);	// Closable
+                 Hlp_PROFILE_Account_email,Box_CLOSABLE);
    Ale_ShowAlertAndButton (Ale_WARNING,Txt_Please_check_and_confirm_your_email_address,
                            ActFrmMyAcc,NULL,NULL,NULL,
                            Btn_CONFIRM_BUTTON,Txt_Check);
diff --git a/swad_menu.c b/swad_menu.c
index 7db43d32..dfdf692e 100644
--- a/swad_menu.c
+++ b/swad_menu.c
@@ -400,8 +400,7 @@ void Mnu_PutIconsToSelectMenu (void)
    Mnu_Menu_t Menu;
 
    Box_StartBox (NULL,Txt_Menu,Mnu_PutIconsMenu,
-                 Hlp_PROFILE_Preferences_menu,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_menu,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"PREF_CONTAINER\">");
    for (Menu = (Mnu_Menu_t) 0;
 	Menu < Mnu_NUM_MENUS;
diff --git a/swad_message.c b/swad_message.c
index 3fb9cfaf..bc2779d9 100644
--- a/swad_message.c
+++ b/swad_message.c
@@ -226,10 +226,8 @@ static void Msg_PutFormMsgUsrs (char Content[Cns_MAX_BYTES_LONG_TEXT + 1])
 
    /***** Start box *****/
    Box_StartBox (NULL,Gbl.Msg.Reply.IsReply ? Txt_Reply_message :
-					      Txt_New_message,
-		 NULL,
-		 Hlp_MESSAGES_Write,
-                 false);	// Not closable
+					      Txt_New_message,NULL,
+		 Hlp_MESSAGES_Write,Box_NOT_CLOSABLE);
 
    if (Gbl.Msg.ShowOnlyOneRecipient)
       /***** Form to show several potential recipients *****/
@@ -1756,14 +1754,12 @@ static void Msg_ShowSentOrReceivedMessages (void)
 
    /***** Start box with messages *****/
    Box_StartBox ("97%",Msg_WriteNumMsgs (NumUnreadMsgs),Msg_PutIconsListMsgs,
-                 Help[Gbl.Msg.TypeOfMessages],
-                 false);	// Not closable
+                 Help[Gbl.Msg.TypeOfMessages],Box_NOT_CLOSABLE);
 
    /***** Filter messages *****/
    /* Start box with filter */
    Box_StartBox (NULL,Txt_Filter,NULL,
-                 HelpFilter[Gbl.Msg.TypeOfMessages],
-                 true);	// Closable
+                 HelpFilter[Gbl.Msg.TypeOfMessages],Box_CLOSABLE);
 
    /* Form to see messages again */
    Act_FormStart (ActionSee[Gbl.Msg.TypeOfMessages]);
@@ -3780,9 +3776,7 @@ void Msg_ListBannedUsrs (void)
 
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Banned_users,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** List users *****/
       for (NumUsr = 1;
diff --git a/swad_network.c b/swad_network.c
index 9320b751..c9a7cb97 100644
--- a/swad_network.c
+++ b/swad_network.c
@@ -301,9 +301,7 @@ void Net_ShowFormMyWebsAndSocialNets (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Webs_social_networks,Net_PutIconsWebsSocialNetworks,
-                      Hlp_PROFILE_Webs,
-		      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_Webs,Box_NOT_CLOSABLE,2);
 
    for (NumURL = (Net_WebsAndSocialNetworks_t) 0;
 	NumURL < Net_NUM_WEBS_AND_SOCIAL_NETWORKS;
@@ -537,9 +535,7 @@ void Net_ShowWebAndSocialNetworksStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_SOCIAL_NETWORKS],NULL,
-                      Hlp_STATS_Figures_webs_social_networks,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_webs_social_networks,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_notice.c b/swad_notice.c
index 0e6526c9..553b038e 100644
--- a/swad_notice.c
+++ b/swad_notice.c
@@ -104,8 +104,7 @@ void Not_ShowFormNotice (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_New_notice,NULL,
-                 Hlp_MESSAGES_Notices,
-                 false);	// Not closable
+                 Hlp_MESSAGES_Notices,Box_NOT_CLOSABLE);
 
    /***** Message body *****/
    fprintf (Gbl.F.Out,"<textarea name=\"Content\" cols=\"30\" rows=\"10\""
@@ -395,8 +394,7 @@ void Not_ShowNotices (Not_Listing_t TypeNoticesListing)
 	               Gbl.CurrentCrs.Notices.HighlightNotCod > 0 ? Txt_All_notices :
 	                	                                    Txt_Notices,
 		       Not_PutIconsListNotices,
-		       Hlp_MESSAGES_Notices,
-                       false);	// Not closable
+		       Hlp_MESSAGES_Notices,Box_NOT_CLOSABLE);
          if (!NumNotices)
 	    Ale_ShowAlert (Ale_INFO,Txt_No_notices);
 	}
diff --git a/swad_notification.c b/swad_notification.c
index 8137b575..5deae621 100644
--- a/swad_notification.c
+++ b/swad_notification.c
@@ -391,8 +391,7 @@ void Ntf_ShowMyNotifications (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Notifications,Ntf_PutIconsNotif,
-                 Hlp_MESSAGES_Notifications,
-                 false);	// Not closable
+                 Hlp_MESSAGES_Notifications,Box_NOT_CLOSABLE);
 
    /***** List my notifications *****/
    if (NumNotifications)	// Notifications found
@@ -1900,8 +1899,7 @@ void Ntf_PutFormChangeNotifSentByEMail (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Notifications,Ntf_PutIconsNotif,
-                 Hlp_PROFILE_Preferences_notifications,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_notifications,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    Act_FormStart (ActChgNtfPrf);
diff --git a/swad_password.c b/swad_password.c
index b10cf7eb..c7234e32 100644
--- a/swad_password.c
+++ b/swad_password.c
@@ -254,8 +254,7 @@ void Pwd_ShowFormSendNewPwd (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Forgotten_password,NULL,
-                 Hlp_PROFILE_Password,
-                 false);	// Not closable
+                 Hlp_PROFILE_Password,Box_NOT_CLOSABLE);
 
    /***** Help text *****/
    Ale_ShowAlert (Ale_INFO,Txt_If_you_have_forgotten_your_password_);
@@ -700,9 +699,7 @@ void Pwd_ShowFormChgPwd (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Password,NULL,
-                      Hlp_PROFILE_Password,
-		      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_Password,Box_NOT_CLOSABLE,2);
 
    /* Current password */
    if (IHaveAPasswordInDB) // If I have a password in database...
@@ -829,8 +826,7 @@ void Pwd_ShowFormOthPwd (void)
 	{
 	 /***** Start box *****/
          Box_StartBox (NULL,Txt_Password,NULL,
-                       NULL,
-                       false);	// Not closable
+                       NULL,Box_NOT_CLOSABLE);
 
 	 /***** Show user's record *****/
 	 Rec_ShowSharedUsrRecord (Rec_SHA_RECORD_LIST,
diff --git a/swad_photo.c b/swad_photo.c
index 7a7815ae..0a36ccda 100644
--- a/swad_photo.c
+++ b/swad_photo.c
@@ -329,8 +329,7 @@ static void Pho_ReqPhoto (const struct UsrData *UsrDat,const char *PhotoURL)
    Box_StartBox (NULL,Txt_Photo,
                  ItsMe ? Pho_PutIconToRequestRemoveMyPhoto :
                          Pho_PutIconToRequestRemoveOtherUsrPhoto,
-                 Hlp_PROFILE_Photo,
-                 false);	// Not closable
+                 Hlp_PROFILE_Photo,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    if (ItsMe)
@@ -1694,8 +1693,7 @@ void Pho_ShowOrPrintPhotoDegree (Pho_AvgPhotoSeeOrPrint_t SeeOrPrint)
 
 	 /***** Start box *****/
 	 Box_StartBox (NULL,Txt_Degrees,Pho_PutIconToPrintDegreeStats,
-		       Hlp_STATS_Degrees,
-                       false);	// Not closable
+		       Hlp_STATS_Degrees,Box_NOT_CLOSABLE);
 	 Tbl_StartTableCenter (2);
 
 	 /***** Put a selector for the type of average *****/
@@ -1712,8 +1710,7 @@ void Pho_ShowOrPrintPhotoDegree (Pho_AvgPhotoSeeOrPrint_t SeeOrPrint)
       case Pho_DEGREES_PRINT:
 	 /***** Start box *****/
 	 Box_StartBox (NULL,Txt_Degrees,NULL,
-	               NULL,
-                       false);	// Not closable
+	               NULL,Box_NOT_CLOSABLE);
 	 break;
      }
 
diff --git a/swad_place.c b/swad_place.c
index 81c24577..a2b04615 100644
--- a/swad_place.c
+++ b/swad_place.c
@@ -120,8 +120,7 @@ void Plc_SeePlaces (void)
       /***** Table head *****/
       Box_StartBox (NULL,Txt_Places,ICanEdit ? Plc_PutIconToEditPlaces :
                         	               NULL,
-                    Hlp_INSTITUTION_Places,
-                    false);	// Not closable
+                    Hlp_INSTITUTION_Places,Box_NOT_CLOSABLE);
       Tbl_StartTableWideMargin (2);
       fprintf (Gbl.F.Out,"<tr>");
       for (Order = Plc_ORDER_BY_PLACE;
@@ -250,8 +249,7 @@ void Plc_EditPlaces (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Places,Plc_PutIconToViewPlacesWhenEditing,
-                 Hlp_INSTITUTION_Places_edit,
-                 false);	// Not closable
+                 Hlp_INSTITUTION_Places_edit,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new place *****/
    Plc_PutFormToCreatePlace ();
@@ -742,9 +740,7 @@ static void Plc_PutFormToCreatePlace (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_place,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Plc_PutHeadPlaces ();
diff --git a/swad_plugin.c b/swad_plugin.c
index bfd4053d..0ec120ac 100644
--- a/swad_plugin.c
+++ b/swad_plugin.c
@@ -95,9 +95,7 @@ void Plg_ListPlugins (void)
    Box_StartBoxTable (NULL,Txt_Plugins,
                       Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM ? Plg_PutIconToEditPlugins :
                                                                NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -349,9 +347,7 @@ static void Plg_ListPluginsForEdition (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Plugins,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Plg_PutHeadPlugins ();
@@ -847,9 +843,7 @@ static void Plg_PutFormToCreatePlugin (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_plugin,NULL,
-                      NULL,
-	              false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_preference.c b/swad_preference.c
index f8faf68f..1d7261b8 100644
--- a/swad_preference.c
+++ b/swad_preference.c
@@ -76,8 +76,7 @@ void Pre_EditPrefs (void)
 
    /***** Internationalization: language, first day of week, date format *****/
    Box_StartBox (NULL,Txt_Internationalization,NULL,
-                 Hlp_PROFILE_Preferences_internationalization,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_internationalization,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"FRAME_INLINE\">");
    Lan_PutBoxToSelectLanguage ();		// 1. Language
    fprintf (Gbl.F.Out,"</div>"
@@ -91,8 +90,7 @@ void Pre_EditPrefs (void)
 
    /***** Design: icon set, menu, theme, side columns *****/
    Box_StartBox (NULL,Txt_Design,NULL,
-                 Hlp_PROFILE_Preferences_design,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_design,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"FRAME_INLINE\">");
    Ico_PutIconsToSelectIconSet ();		// 4. Icon set
    fprintf (Gbl.F.Out,"</div>"
@@ -240,8 +238,7 @@ static void Pre_PutIconsToSelectSideCols (void)
    unsigned SideCols;
 
    Box_StartBox (NULL,Txt_Columns,Pre_PutIconsSideColumns,
-                 Hlp_PROFILE_Preferences_columns,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_columns,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"PREF_CONTAINER\">");
    for (SideCols = 0;
 	SideCols <= Lay_SHOW_BOTH_COLUMNS;
diff --git a/swad_privacy.c b/swad_privacy.c
index 9af49417..93da349b 100644
--- a/swad_privacy.c
+++ b/swad_privacy.c
@@ -104,9 +104,7 @@ void Pri_EditMyPrivacy (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Privacy,Pri_PutIconsPrivacy,
-                      Hlp_PROFILE_Preferences_privacy,
-                      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_Preferences_privacy,Box_NOT_CLOSABLE,2);
 
    /***** Edit photo visibility *****/
    Pri_PutFormVisibility (Txt_Photo,
diff --git a/swad_profile.c b/swad_profile.c
index 034470bd..e2174178 100644
--- a/swad_profile.c
+++ b/swad_profile.c
@@ -176,8 +176,7 @@ void Prf_RequestUserProfile (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Another_user_s_profile,NULL,
-                 Hlp_SOCIAL_Profiles_view_public_profile,
-                 false);	// Not closable
+                 Hlp_SOCIAL_Profiles_view_public_profile,Box_NOT_CLOSABLE);
 
    /***** Form to request user's @nickname *****/
    /* By default, the nickname is filled with my nickname
diff --git a/swad_record.c b/swad_record.c
index 7f808673..b6a9730c 100644
--- a/swad_record.c
+++ b/swad_record.c
@@ -186,9 +186,7 @@ void Rec_ReqEditRecordFields (void)
      {
       /* Start box and table */
       Box_StartBoxTable (NULL,Txt_Record_fields,NULL,
-                         Hlp_USERS_Students_course_record_card,
-			 false,	// Not closable
-                         2);
+                         Hlp_USERS_Students_course_record_card,Box_NOT_CLOSABLE,2);
 
       Rec_ListFieldsRecordsForEdition ();
 
@@ -365,9 +363,7 @@ void Rec_ShowFormCreateRecordField (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_New_record_field,NULL,
-                      Hlp_USERS_Students_course_record_card,
-		      false,	// Not closable
-                      2);
+                      Hlp_USERS_Students_course_record_card,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    Rec_WriteHeadingRecordFields ();
@@ -1368,8 +1364,7 @@ static void Rec_ShowRecordOneTchCrs (void)
       fprintf (Gbl.F.Out,"<div class=\"REC_TT\">");
       Gbl.TimeTable.Type = TT_TUTORING_TIMETABLE;
       Box_StartBox (Width,Txt_TIMETABLE_TYPES[Gbl.TimeTable.Type],NULL,
-                    Hlp_USERS_Teachers_timetable,
-                    false);	// Not closable
+                    Hlp_USERS_Teachers_timetable,Box_NOT_CLOSABLE);
       TT_ShowTimeTable (Gbl.Usrs.Other.UsrDat.UsrCod);
       Box_EndBox ();
       fprintf (Gbl.F.Out,"</div>");
@@ -1492,10 +1487,8 @@ static void Rec_ListRecordsTchs (Rec_SharedRecordViewType_t TypeOfView)
               {
 	       fprintf (Gbl.F.Out,"<div class=\"REC_TT\">");
                Gbl.TimeTable.Type = TT_TUTORING_TIMETABLE;
-	       Box_StartBox (Width,Txt_TIMETABLE_TYPES[Gbl.TimeTable.Type],
-	                     NULL,
-	                     Hlp_USERS_Teachers_timetable,
-                             false);	// Not closable
+	       Box_StartBox (Width,Txt_TIMETABLE_TYPES[Gbl.TimeTable.Type],NULL,
+	                     Hlp_USERS_Teachers_timetable,Box_NOT_CLOSABLE);
 	       TT_ShowTimeTable (UsrDat.UsrCod);
 	       Box_EndBox ();
                fprintf (Gbl.F.Out,"</div>");
@@ -1784,9 +1777,7 @@ static void Rec_ShowCrsRecord (Rec_CourseRecordViewType_t TypeOfView,
    /***** Start box and table *****/
    sprintf (StrRecordWidth,"%upx",Rec_RECORD_WIDTH);
    Box_StartBoxTable (StrRecordWidth,NULL,NULL,
-                      Rec_RecordHelp[TypeOfView],
-		      false,	// Not closable
-                      2);
+                      Rec_RecordHelp[TypeOfView],Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -2328,9 +2319,7 @@ void Rec_ShowSharedUsrRecord (Rec_SharedRecordViewType_t TypeOfView,
    Box_StartBoxTable (StrRecordWidth,NULL,
                       TypeOfView == Rec_SHA_OTHER_NEW_USR_FORM ? NULL :	// New user ==> don't put icons
                         	                                 Rec_PutIconsCommands,
-                      Rec_RecordHelp[TypeOfView],
-		      false,	// Not closable
-                      2);
+                      Rec_RecordHelp[TypeOfView],Box_NOT_CLOSABLE,2);
 
    /***** Institution and user's photo *****/
    fprintf (Gbl.F.Out,"<tr>");
@@ -4005,9 +3994,7 @@ void Rec_ShowFormMyInsCtrDpt (void)
    Box_StartBoxTable ("800px",IAmATeacher ? Txt_Institution_centre_and_department :
 	                                    Txt_Institution,
 	              NULL,
-	              Hlp_PROFILE_Institution,
-		      false,	// Not closable
-	              2);
+	              Hlp_PROFILE_Institution,Box_NOT_CLOSABLE,2);
 
    /***** Country *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_report.c b/swad_report.c
index 7e5abf74..ce1c1cd6 100644
--- a/swad_report.c
+++ b/swad_report.c
@@ -157,8 +157,7 @@ void Rep_ReqMyUsageReport (void)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Report_of_use_of_PLATFORM,Cfg_PLATFORM_SHORT_NAME);
    Box_StartBox (NULL,Gbl.Title,NULL,
-                 Hlp_STATS_Report,
-                 false);	// Not closable
+                 Hlp_STATS_Report,Box_NOT_CLOSABLE);
 
    /***** Header *****/
    Req_TitleReport (NULL);	// NULL means do not write date
@@ -263,8 +262,7 @@ static void Rep_PutLinkToMyUsageReport (struct Rep_Report *Report)
    /***** Start box *****/
    sprintf (Gbl.Title,Txt_Report_of_use_of_PLATFORM,Cfg_PLATFORM_SHORT_NAME);
    Box_StartBox (NULL,Gbl.Title,NULL,
-                 Hlp_STATS_Report,
-                 false);	// Not closable
+                 Hlp_STATS_Report,Box_NOT_CLOSABLE);
 
    /***** Header *****/
    Req_TitleReport (&Report->CurrentTimeUTC);
diff --git a/swad_search.c b/swad_search.c
index 7e4d56e8..d9689830 100644
--- a/swad_search.c
+++ b/swad_search.c
@@ -238,8 +238,7 @@ static void Sch_PutFormToSearchWithWhatToSearchAndScope (Act_Action_t Action,Sco
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
    Act_FormStart (Action);
    Box_StartBox (NULL,Txt_Search,NULL,
-                 Hlp_Search,
-                 false);	// Not closable
+                 Hlp_Search,Box_NOT_CLOSABLE);
 
    /***** Scope (whole platform, current country, current institution,
                  current centre, current degree or current course) *****/
diff --git a/swad_social.c b/swad_social.c
index 695874be..37b88f50 100644
--- a/swad_social.c
+++ b/swad_social.c
@@ -923,8 +923,7 @@ static void Soc_ShowTimeline (const char *Query,const char *Title,
 
    /***** Start box *****/
    Box_StartBox (Soc_WIDTH_TIMELINE,Title,Soc_PutIconsTimeline,
-                 Hlp_SOCIAL_Timeline,
-                 false);	// Not closable
+                 Hlp_SOCIAL_Timeline,Box_NOT_CLOSABLE);
 
    /***** Put form to select users whom public activity is displayed *****/
    if (GlobalTimeline)
@@ -1277,8 +1276,7 @@ static void Soc_WriteSocialNote (const struct SocialNote *SocNot,
    if (ShowNoteAlone)
      {
       Box_StartBox (Soc_WIDTH_TIMELINE,NULL,NULL,
-                    NULL,
-                    true);	// Closable
+                    NULL,Box_CLOSABLE);
       fprintf (Gbl.F.Out,"<ul class=\"LIST_LEFT\">");
      }
 
@@ -2533,8 +2531,7 @@ static void Soc_WriteSocialComment (struct SocialComment *SocCom,
    if (ShowCommentAlone)
      {
       Box_StartBox (Soc_WIDTH_TIMELINE,NULL,NULL,
-                    NULL,
-                    false);	// Not closable
+                    NULL,Box_NOT_CLOSABLE);
 
       /***** Write sharer/commenter if distinct to author *****/
       Soc_WriteTopMessage (TopMessage,UsrCod);
diff --git a/swad_statistic.c b/swad_statistic.c
index f1a44dd3..e68c7223 100644
--- a/swad_statistic.c
+++ b/swad_statistic.c
@@ -477,8 +477,7 @@ void Sta_AskShowCrsHits (void)
    sprintf (Gbl.Title,Txt_Statistics_of_visits_to_the_course_X,
 	    Gbl.CurrentCrs.Crs.ShrtName);
    Box_StartBox (NULL,Gbl.Title,NULL,
-                 Hlp_STATS_Visits_visits_to_course,
-                 false);	// Not closable
+                 Hlp_STATS_Visits_visits_to_course,Box_NOT_CLOSABLE);
 
    /***** Show form to select the groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActReqAccCrs);
@@ -675,9 +674,7 @@ void Sta_AskShowGblHits (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Statistics_of_all_visits,NULL,
-                      Hlp_STATS_Visits_global_visits,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Visits_global_visits,Box_NOT_CLOSABLE,2);
 
    /***** Start and end dates for the search *****/
    Dat_PutFormStartEndClientLocalDateTimesWithYesterdayToday (Gbl.Action.Act == ActReqAccGbl);
@@ -1471,12 +1468,10 @@ static void Sta_ShowHits (Sta_GlobalOrCourseAccesses_t GlobalOrCourse)
       /***** Put the table with the clicks *****/
       if (Gbl.Stat.ClicksGroupedBy == Sta_CLICKS_CRS_DETAILED_LIST)
 	 Box_StartBox ("100%",Txt_List_of_detailed_clicks,NULL,
-	               NULL,
-                       false);	// Not closable
+	               NULL,Box_NOT_CLOSABLE);
       else
 	 Box_StartBox (NULL,Txt_STAT_TYPE_COUNT_CAPS[Gbl.Stat.CountType],NULL,
-	               NULL,
-                       false);	// Not closable
+	               NULL,Box_NOT_CLOSABLE);
 
       fprintf (Gbl.F.Out,"<table");
       if (Sta_CellPadding[Gbl.Stat.ClicksGroupedBy])
@@ -3919,8 +3914,7 @@ void Sta_ReqShowFigures (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Figures,NULL,
-                 Hlp_STATS_Figures,
-                 false);	// Not closable
+                 Hlp_STATS_Figures,Box_NOT_CLOSABLE);
 
    /***** Compute stats for anywhere, degree or course? *****/
    fprintf (Gbl.F.Out,"<label class=\"%s\">%s:&nbsp;",
@@ -4084,9 +4078,7 @@ static void Sta_GetAndShowUsersStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_USERS],NULL,
-                      Hlp_STATS_Figures_users,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_users,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -4219,9 +4211,7 @@ static void Sta_GetAndShowUsersRanking (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_USERS_RANKING],NULL,
-                      Hlp_STATS_Figures_ranking,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_ranking,Box_NOT_CLOSABLE,2);
 
    /***** Write heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -4289,9 +4279,7 @@ static void Sta_GetAndShowHierarchyStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_HIERARCHY],NULL,
-                      Hlp_STATS_Figures_hierarchy,
-		      false,	// Not closable
-		      2);
+                      Hlp_STATS_Figures_hierarchy,Box_NOT_CLOSABLE,2);
 
    Sta_WriteHeadDegsCrssInSWAD ();
    Sta_GetAndShowNumCtysInSWAD ();
@@ -4982,8 +4970,7 @@ static void Sta_GetAndShowInstitutionsStats (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Institutions,NULL,
-                 Hlp_STATS_Figures_institutions,
-                 false);	// Not closable
+                 Hlp_STATS_Figures_institutions,Box_NOT_CLOSABLE);
 
    /***** Form to select type of list used to display degree photos *****/
    Usr_GetAndUpdatePrefsAboutUsrList ();
@@ -5020,9 +5007,7 @@ static void Sta_GetAndShowInssOrderedByNumCtrs (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable ("100%",Txt_Institutions_by_number_of_centres,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Get institutions ordered by number of centres *****/
    switch (Gbl.Scope.Current)
@@ -5075,9 +5060,7 @@ static void Sta_GetAndShowInssOrderedByNumDegs (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable ("100%",Txt_Institutions_by_number_of_degrees,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Get institutions ordered by number of degrees *****/
    switch (Gbl.Scope.Current)
@@ -5133,9 +5116,7 @@ static void Sta_GetAndShowInssOrderedByNumCrss (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable ("100%",Txt_Institutions_by_number_of_courses,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Get institutions ordered by number of courses *****/
    switch (Gbl.Scope.Current)
@@ -5194,9 +5175,7 @@ static void Sta_GetAndShowInssOrderedByNumUsrsInCrss (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable ("100%",Txt_Institutions_by_number_of_users_in_courses,NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Get institutions ordered by number of users in courses *****/
    switch (Gbl.Scope.Current)
@@ -5260,9 +5239,7 @@ static void Sta_GetAndShowInssOrderedByNumUsrsWhoClaimToBelongToThem (void)
    /***** Start box and table *****/
    Box_StartBoxTable ("100%",Txt_Institutions_by_number_of_users_who_claim_to_belong_to_them,
                       NULL,
-                      NULL,
-		      false,	// Not closable
-                      2);
+                      NULL,Box_NOT_CLOSABLE,2);
 
    /***** Get institutions ordered by number of users who claim to belong to them *****/
    switch (Gbl.Scope.Current)
@@ -5492,9 +5469,7 @@ static void Sta_GetAndShowFileBrowsersStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_FOLDERS_AND_FILES],NULL,
-                      Hlp_STATS_Figures_folders_and_files,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_folders_and_files,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    Sta_WriteStatsExpTreesTableHead ();
@@ -6570,9 +6545,7 @@ static void Sta_GetAndShowOERsStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_OER],NULL,
-                      Hlp_STATS_Figures_open_educational_resources_oer,
-                      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_open_educational_resources_oer,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -6762,9 +6735,7 @@ static void Sta_GetAndShowAssignmentsStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_ASSIGNMENTS],NULL,
-                      Hlp_STATS_Figures_assignments,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_assignments,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -6834,9 +6805,7 @@ static void Sta_GetAndShowTestsStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_TESTS],NULL,
-                      Hlp_STATS_Figures_tests,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_tests,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -7006,9 +6975,7 @@ static void Sta_GetAndShowSocialActivityStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_SOCIAL_ACTIVITY],NULL,
-                      Hlp_STATS_Figures_timeline,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_timeline,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -7296,9 +7263,7 @@ static void Sta_GetAndShowFollowStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_FOLLOW],NULL,
-                      Hlp_STATS_Figures_followed_followers,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_followed_followers,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -7559,9 +7524,7 @@ static void Sta_GetAndShowForumStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_FORUMS],NULL,
-                      Hlp_STATS_Figures_forums,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_forums,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -7918,9 +7881,7 @@ static void Sta_GetAndShowNumUsrsPerNotifyEvent (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_NOTIFY_EVENTS],NULL,
-                      Hlp_STATS_Figures_notifications,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_notifications,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8265,9 +8226,7 @@ static void Sta_GetAndShowNoticesStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_NOTICES],NULL,
-                      Hlp_STATS_Figures_notices,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_notices,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8350,9 +8309,7 @@ static void Sta_GetAndShowMsgsStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_MESSAGES],NULL,
-                      Hlp_STATS_Figures_messages,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_messages,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8457,9 +8414,7 @@ static void Sta_GetAndShowSurveysStats (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_SURVEYS],NULL,
-                      Hlp_STATS_Figures_surveys,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_surveys,Box_NOT_CLOSABLE,2);
 
    /***** Write table heading *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8526,9 +8481,7 @@ static void Sta_GetAndShowNumUsrsPerPrivacy (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_PRIVACY],NULL,
-                      Hlp_STATS_Figures_privacy,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_privacy,Box_NOT_CLOSABLE,2);
 
    /***** Privacy for photo *****/
    Sta_GetAndShowNumUsrsPerPrivacyForAnObject (Txt_Photo,"PhotoVisibility");
@@ -8696,9 +8649,7 @@ static void Sta_GetAndShowNumUsrsPerLanguage (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_LANGUAGES],NULL,
-                      Hlp_STATS_Figures_language,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_language,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8839,9 +8790,7 @@ static void Sta_GetAndShowNumUsrsPerFirstDayOfWeek (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_FIRST_DAY_OF_WEEK],NULL,
-                      Hlp_STATS_Figures_calendar,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_calendar,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -8981,9 +8930,7 @@ static void Sta_GetAndShowNumUsrsPerDateFormat (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_DATE_FORMAT],NULL,
-                      Hlp_STATS_Figures_dates,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_dates,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -9121,9 +9068,7 @@ static void Sta_GetAndShowNumUsrsPerIconSet (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_ICON_SETS],NULL,
-                      Hlp_STATS_Figures_icons,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_icons,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -9266,9 +9211,7 @@ static void Sta_GetAndShowNumUsrsPerMenu (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_MENUS],NULL,
-                      Hlp_STATS_Figures_menu,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_menu,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -9408,9 +9351,7 @@ static void Sta_GetAndShowNumUsrsPerTheme (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_THEMES],NULL,
-                      Hlp_STATS_Figures_theme,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_theme,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -9549,9 +9490,7 @@ static void Sta_GetAndShowNumUsrsPerSideColumns (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_STAT_USE_STAT_TYPES[Sta_SIDE_COLUMNS],NULL,
-                      Hlp_STATS_Figures_columns,
-		      false,	// Not closable
-                      2);
+                      Hlp_STATS_Figures_columns,Box_NOT_CLOSABLE,2);
 
    /***** Heading row *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_survey.c b/swad_survey.c
index 8c9e71cd..79dd8dc8 100644
--- a/swad_survey.c
+++ b/swad_survey.c
@@ -215,8 +215,7 @@ static void Svy_ListAllSurveys (struct SurveyQuestion *SvyQst)
 
    /***** Start box *****/
    Box_StartBox ("100%",Txt_Surveys,Svy_PutIconsListSurveys,
-                 Hlp_ASSESSMENT_Surveys,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Surveys,Box_NOT_CLOSABLE);
 
    /***** Select whether show only my groups or all groups *****/
    if (Gbl.CurrentCrs.Grps.NumGrps)
@@ -435,8 +434,7 @@ static void Svy_ShowOneSurvey (long SvyCod,struct SurveyQuestion *SvyQst,
    /***** Start box *****/
    if (ShowOnlyThisSvyComplete)
       Box_StartBox (NULL,Txt_Survey,NULL,
-                    Hlp_ASSESSMENT_Surveys,
-                    false);	// Not closable
+                    Hlp_ASSESSMENT_Surveys,Box_NOT_CLOSABLE);
 
    /***** Get data of this survey *****/
    Svy.SvyCod = SvyCod;
@@ -1820,14 +1818,10 @@ void Svy_RequestCreatOrEditSvy (void)
    /***** Start box and table *****/
    if (ItsANewSurvey)
       Box_StartBoxTable (NULL,Txt_New_survey,NULL,
-                         Hlp_ASSESSMENT_Surveys_new_survey,
-			 false,	// Not closable
-			 2);
+                         Hlp_ASSESSMENT_Surveys_new_survey,Box_NOT_CLOSABLE,2);
    else
       Box_StartBoxTable (NULL,Txt_Edit_survey,NULL,
-                         Hlp_ASSESSMENT_Surveys_edit_survey,
-			 false,	// Not closable
-			 2);
+                         Hlp_ASSESSMENT_Surveys_edit_survey,Box_NOT_CLOSABLE,2);
 
    /***** Scope of the survey *****/
    fprintf (Gbl.F.Out,"<tr>"
@@ -2024,9 +2018,7 @@ static void Svy_ShowLstGrpsToEditSurvey (long SvyCod)
                The_ClassForm[Gbl.Prefs.Theme],
                Txt_Groups);
       Box_StartBoxTable ("95%",NULL,NULL,
-                         NULL,
-			 false,	// Not closable
-                         0);
+                         NULL,Box_NOT_CLOSABLE,0);
 
       /***** First row: checkbox to select the whole course *****/
       fprintf (Gbl.F.Out,"<tr>"
@@ -2663,13 +2655,11 @@ static void Svy_ShowFormEditOneQst (long SvyCod,struct SurveyQuestion *SvyQst,
       sprintf (Gbl.Title,"%s %u",
                Txt_Question,SvyQst->QstInd + 1);	// Question index may be 0, 1, 2, 3,...
       Box_StartBox (NULL,Gbl.Title,Svy_PutIconToRemoveOneQst,
-                    NULL,
-                    false);	// Not closable
+                    NULL,Box_NOT_CLOSABLE);
      }
    else
       Box_StartBox (NULL,Txt_New_question,NULL,
-                    Hlp_ASSESSMENT_Surveys_questions,
-                    false);	// Not closable
+                    Hlp_ASSESSMENT_Surveys_questions,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    Act_FormStart (ActRcvSvyQst);
@@ -3186,8 +3176,7 @@ static void Svy_ListSvyQuestions (struct Survey *Svy,struct SurveyQuestion *SvyQ
    Gbl.Svys.SvyCodToEdit = Svy->SvyCod;
    Box_StartBox (NULL,Txt_Questions,Svy->Status.ICanEdit ? Svy_PutIconToAddNewQuestion :
                                                            NULL,
-                 Hlp_ASSESSMENT_Surveys_questions,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Surveys_questions,Box_NOT_CLOSABLE);
 
    if (NumQsts)
      {
diff --git a/swad_syllabus.c b/swad_syllabus.c
index f829d6af..6865201d 100644
--- a/swad_syllabus.c
+++ b/swad_syllabus.c
@@ -249,8 +249,7 @@ bool Syl_CheckAndEditSyllabus (void)
 					 NULL,
 			 Gbl.Syllabus.EditionIsActive ? Hlp_COURSE_Syllabus_edit :
 			                                Hlp_COURSE_Syllabus,
-			 false,	// Not closable
-			 1);
+			 Box_NOT_CLOSABLE,1);
 
       /***** Write the current syllabus *****/
       Syl_ShowSyllabus ();
diff --git a/swad_test.c b/swad_test.c
index 6e189695..020967f1 100644
--- a/swad_test.c
+++ b/swad_test.c
@@ -318,8 +318,7 @@ void Tst_ShowFormAskTst (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Take_a_test,Tst_PutIconsTests,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Get tags *****/
    if ((NumRows = Tst_GetEnabledTagsFromThisCrs (&mysql_res)) != 0)
@@ -437,8 +436,7 @@ void Tst_ShowNewTest (void)
 
 	    /***** Start box *****/
 	    Box_StartBox (NULL,Txt_Test,NULL,
-	                  Hlp_ASSESSMENT_Tests,
-                          false);	// Not closable
+	                  Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 	    Lay_WriteHeaderClassPhoto (false,false,
 				       Gbl.CurrentIns.Ins.InsCod,
 				       Gbl.CurrentDeg.Deg.DegCod,
@@ -537,8 +535,7 @@ void Tst_AssessTest (void)
 
 	 /***** Start box *****/
 	 Box_StartBox (NULL,Txt_Test_result,NULL,
-	               Hlp_ASSESSMENT_Tests,
-                       false);	// Not closable
+	               Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 	 Lay_WriteHeaderClassPhoto (false,false,
 				    Gbl.CurrentIns.Ins.InsCod,
 				    Gbl.CurrentDeg.Deg.DegCod,
@@ -1282,8 +1279,7 @@ void Tst_ShowFormAskEditTsts (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_List_edit_questions,Tst_PutIconsTests,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Get tags already present in the table of questions *****/
    if ((NumRows = Tst_GetAllTagsFromCurrentCrs (&mysql_res)))
@@ -1739,9 +1735,7 @@ static void Tst_ShowFormEditTags (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Tags,NULL,
-                         Hlp_ASSESSMENT_Tests,
-			 false,	// Not closable
-                         2);
+                         Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE,2);
 
       /***** Show tags *****/
       for (NumRow = 0;
@@ -1854,8 +1848,7 @@ static void Tst_ShowFormConfigTst (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Configure_tests,Tst_PutIconsTests,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    Act_FormStart (ActRcvCfgTst);
@@ -2735,8 +2728,7 @@ static void Tst_ListOneOrMoreQuestionsToEdit (unsigned long NumRows,MYSQL_RES *m
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Questions,Tst_PutIconsTests,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Write the heading *****/
    Tbl_StartTableWideMargin (2);
@@ -4527,13 +4519,11 @@ static void Tst_PutFormEditOneQst (char Stem[Cns_MAX_BYTES_TEXT + 1],
      {
       sprintf (Title,Txt_Question_code_X,Gbl.Test.QstCod);
       Box_StartBox (NULL,Title,Tst_PutIconToRemoveOneQst,
-                    Hlp_ASSESSMENT_Tests,
-                    false);	// Not closable
+                    Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
      }
    else
       Box_StartBox (NULL,Txt_New_question,NULL,
-                    Hlp_ASSESSMENT_Tests,
-                    false);	// Not closable
+                    Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Start form *****/
    Act_FormStart (ActRcvTstQst);
@@ -6993,8 +6983,7 @@ void Tst_SelUsrsToSeeUsrsTestResults (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Test_results,NULL,
-                 Hlp_ASSESSMENT_Tests_test_results,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests_test_results,Box_NOT_CLOSABLE);
 
    /***** Show form to select the groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActReqSeeUsrTstRes);
@@ -7079,9 +7068,7 @@ void Tst_SelDatesToSeeMyTestResults (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Test_results,NULL,
-                      Hlp_ASSESSMENT_Tests_test_results,
-		      false,	// Not closable
-                      2);
+                      Hlp_ASSESSMENT_Tests_test_results,Box_NOT_CLOSABLE,2);
    Dat_PutFormStartEndClientLocalDateTimesWithYesterdayToday (false);
 
    /***** End table, send button and end box *****/
@@ -7154,9 +7141,7 @@ void Tst_ShowUsrsTestResults (void)
      {
       /***** Start box and table *****/
       Box_StartBoxTable (NULL,Txt_Test_results,NULL,
-                         Hlp_ASSESSMENT_Tests_test_results,
-			 false,	// Not closable
-                         2);
+                         Hlp_ASSESSMENT_Tests_test_results,Box_NOT_CLOSABLE,2);
 
       /***** Header of the table with the list of users *****/
       Tst_ShowHeaderTestResults ();
@@ -7251,9 +7236,7 @@ void Tst_ShowMyTestResults (void)
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Test_results,NULL,
-                      Hlp_ASSESSMENT_Tests_test_results,
-		      false,	// Not closable
-                      2);
+                      Hlp_ASSESSMENT_Tests_test_results,Box_NOT_CLOSABLE,2);
 
    /***** Header of the table with the list of users *****/
    Tst_ShowHeaderTestResults ();
@@ -7721,8 +7704,7 @@ void Tst_ShowOneTestResult (void)
 
       /***** Start box *****/
       Box_StartBox (NULL,Txt_Test_result,NULL,
-                    Hlp_ASSESSMENT_Tests_test_results,
-                    false);	// Not closable
+                    Hlp_ASSESSMENT_Tests_test_results,Box_NOT_CLOSABLE);
       Lay_WriteHeaderClassPhoto (false,false,
 				 Gbl.CurrentIns.Ins.InsCod,
 				 Gbl.CurrentDeg.Deg.DegCod,
diff --git a/swad_test_import.c b/swad_test_import.c
index 54ee5747..d272d968 100644
--- a/swad_test_import.c
+++ b/swad_test_import.c
@@ -138,8 +138,7 @@ void TsI_ShowFormImportQstsFromXML (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Import_questions,NULL,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Write help message *****/
    Ale_ShowAlert (Ale_INFO,Txt_You_need_an_XML_file_containing_a_list_of_questions);
@@ -511,8 +510,7 @@ static void TsI_ImportQuestionsFromXMLBuffer (const char *XMLBuffer)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Imported_questions,NULL,
-                 Hlp_ASSESSMENT_Tests,
-                 false);	// Not closable
+                 Hlp_ASSESSMENT_Tests,Box_NOT_CLOSABLE);
 
    /***** Print XML tree *****/
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\""
diff --git a/swad_theme.c b/swad_theme.c
index 88934706..747d5fe6 100644
--- a/swad_theme.c
+++ b/swad_theme.c
@@ -241,8 +241,7 @@ void The_PutIconsToSelectTheme (void)
    The_Theme_t Theme;
 
    Box_StartBox (NULL,Txt_Theme_SKIN,The_PutIconsTheme,
-                 Hlp_PROFILE_Preferences_theme,
-                 false);	// Not closable
+                 Hlp_PROFILE_Preferences_theme,Box_NOT_CLOSABLE);
    fprintf (Gbl.F.Out,"<div class=\"PREF_CONTAINER\">");
    for (Theme = (The_Theme_t) 0;
 	Theme < The_NUM_THEMES;
diff --git a/swad_timetable.c b/swad_timetable.c
index 804c957e..d4a18346 100644
--- a/swad_timetable.c
+++ b/swad_timetable.c
@@ -356,8 +356,7 @@ void TT_ShowClassTimeTable (void)
                   Gbl.TimeTable.ContextualIcons.PutIconEditOfficeHours ||
                   Gbl.TimeTable.ContextualIcons.PutIconPrint) ? TT_PutContextualIcons :
                                                                 NULL,
-                 Help[Gbl.TimeTable.Type],
-                 false);	// Not closable
+                 Help[Gbl.TimeTable.Type],Box_NOT_CLOSABLE);
 
    /***** Start time table drawing *****/
    if (Gbl.TimeTable.Type == TT_COURSE_TIMETABLE)
@@ -434,8 +433,7 @@ void TT_EditCrsTimeTable (void)
    /***** Editable time table *****/
    Gbl.TimeTable.Type = TT_COURSE_TIMETABLE;
    Box_StartBox ("100%",Txt_TIMETABLE_TYPES[Gbl.TimeTable.Type],TT_PutIconToViewCrsTT,
-                 Hlp_COURSE_Timetable,
-                 false);	// Not closable
+                 Hlp_COURSE_Timetable,Box_NOT_CLOSABLE);
    TT_ShowTimeTable (Gbl.Usrs.Me.UsrDat.UsrCod);
    Box_EndBox ();
   }
@@ -452,8 +450,7 @@ void TT_EditMyTutTimeTable (void)
    /***** Time table *****/
    Gbl.TimeTable.Type = TT_TUTORING_TIMETABLE;
    Box_StartBox ("100%",Txt_TIMETABLE_TYPES[Gbl.TimeTable.Type],TT_PutIconToViewMyTT,
-                 Hlp_PROFILE_Timetable,
-                 false);	// Not closable
+                 Hlp_PROFILE_Timetable,Box_NOT_CLOSABLE);
    TT_ShowTimeTable (Gbl.Usrs.Me.UsrDat.UsrCod);
    Box_EndBox ();
   }
diff --git a/swad_user.c b/swad_user.c
index 67b59c3f..2c606d86 100644
--- a/swad_user.c
+++ b/swad_user.c
@@ -2263,9 +2263,7 @@ void Usr_WriteFormLogin (Act_Action_t NextAction,void (*FuncParams) ())
 
    /***** Start box and table *****/
    Box_StartBoxTable (NULL,Txt_Log_in,NULL,
-                      Hlp_PROFILE_LogIn,
-		      false,	// Not closable
-                      2);
+                      Hlp_PROFILE_LogIn,Box_NOT_CLOSABLE,2);
 
    /***** User's ID/nickname *****/
    fprintf (Gbl.F.Out,"<div class=\"LEFT_MIDDLE\">"
@@ -3156,8 +3154,7 @@ void Usr_ShowFormsLogoutAndRole (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_Role,NULL,
-                 Hlp_PROFILE_Session_role,
-                 false);	// Not closable
+                 Hlp_PROFILE_Session_role,Box_NOT_CLOSABLE);
 
    /***** Put a form to change my role *****/
    if (Rol_GetNumAvailableRoles () == 1)
@@ -6675,9 +6672,7 @@ unsigned Usr_ListUsrsFound (Rol_Role_t Role,
 		                   ((NumUsrs == 1) ? Txt_ROLES_SINGUL_abc[Role][Sex] :
 		                                     Txt_ROLES_PLURAL_abc[Role][Sex]));
       Box_StartBoxTable (NULL,Gbl.Title,NULL,
-                         NULL,
-			 false,	// Not closable
-                         2);
+                         NULL,Box_NOT_CLOSABLE,2);
 
       /***** Heading row with column names *****/
       Gbl.Usrs.Listing.WithPhotos = true;
@@ -6826,8 +6821,7 @@ void Usr_ListDataAdms (void)
 
    /***** Start box with list of administrators *****/
    Box_StartBox (NULL,Txt_ROLES_PLURAL_Abc[Rol_DEG_ADM][Usr_SEX_UNKNOWN],NULL,
-                 Hlp_USERS_Administrators,
-                 false);	// Not closable
+                 Hlp_USERS_Administrators,Box_NOT_CLOSABLE);
 
    /***** Form to select scope *****/
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
@@ -7302,8 +7296,7 @@ void Usr_SeeGuests (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_ROLES_PLURAL_Abc[Rol_GST][Usr_SEX_UNKNOWN],Usr_PutIconsListGsts,
-		 Hlp_USERS_Guests,
-                 false);	// Not closable
+		 Hlp_USERS_Guests,Box_NOT_CLOSABLE);
 
    /***** Form to select scope *****/
    if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
@@ -7449,8 +7442,7 @@ void Usr_SeeStudents (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_ROLES_PLURAL_Abc[Rol_STD][Usr_SEX_UNKNOWN],Usr_PutIconsListStds,
-		 Hlp_USERS_Students,
-                 false);	// Not closable
+		 Hlp_USERS_Students,Box_NOT_CLOSABLE);
 
    /***** Form to select scope *****/
    switch (Gbl.Usrs.Me.Role.Logged)
@@ -7635,8 +7627,7 @@ void Usr_SeeTeachers (void)
 
    /***** Start box *****/
    Box_StartBox (NULL,Txt_ROLES_PLURAL_Abc[Rol_TCH][Usr_SEX_UNKNOWN],Usr_PutIconsListTchs,
-		 Hlp_USERS_Teachers,
-                 false);	// Not closable
+		 Hlp_USERS_Teachers,Box_NOT_CLOSABLE);
 
    /***** Form to select scope *****/
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
@@ -8808,8 +8799,7 @@ void Usr_PrintUsrQRCode (void)
      {
       /***** Start box *****/
       Box_StartBox (NULL,Gbl.Usrs.Other.UsrDat.FullName,NULL,
-                    NULL,
-                    false);	// Not closable
+                    NULL,Box_NOT_CLOSABLE);
 
       /***** Show QR code *****/
       if (Gbl.Usrs.Other.UsrDat.Nickname[0])