diff --git a/swad_ID.c b/swad_ID.c
index 66114bd5..a1445fb1 100644
--- a/swad_ID.c
+++ b/swad_ID.c
@@ -494,7 +494,7 @@ void ID_PutLinkToChangeUsrIDs (void)
 
    /***** Link for changing the password *****/
    if (Gbl.Usrs.Other.UsrDat.UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod)	// It's me
-      Lay_PutContextualLink (ActFrmMyAcc,NULL,
+      Lay_PutContextualLink (ActFrmMyAcc,NULL,NULL,
 			     "arroba64x64.gif",
 			     Txt_Change_IDs,Txt_Change_IDs,
                              NULL);
@@ -502,7 +502,7 @@ void ID_PutLinkToChangeUsrIDs (void)
       Lay_PutContextualLink ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActFrmIDsStd :
 	                     (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActFrmIDsTch :
 	                	                                                        ActFrmIDsOth),	// Guest, visitor or admin
-                             Usr_PutParamOtherUsrCodEncrypted,
+                             NULL,Usr_PutParamOtherUsrCodEncrypted,
 			     "arroba64x64.gif",
 			     Txt_Change_IDs,Txt_Change_IDs,
                              NULL);
diff --git a/swad_QR.c b/swad_QR.c
index 96270427..6d2f0de9 100644
--- a/swad_QR.c
+++ b/swad_QR.c
@@ -69,7 +69,7 @@ void QR_PutLinkToPrintQRCode (Act_Action_t Action)
    extern const char *Txt_QR_code;
 
    /***** Link to print QR *****/
-   Lay_PutContextualLink (Action,QR_PutParamQRString,
+   Lay_PutContextualLink (Action,NULL,QR_PutParamQRString,
                           "qr64x64.gif",
                           Txt_QR_code,NULL,
 		          NULL);
diff --git a/swad_account.c b/swad_account.c
index 36a91f2e..852b699f 100644
--- a/swad_account.c
+++ b/swad_account.c
@@ -97,7 +97,7 @@ void Acc_PutLinkToCreateAccount (void)
   {
    extern const char *Txt_Create_account;
 
-   Lay_PutContextualLink (ActFrmMyAcc,NULL,
+   Lay_PutContextualLink (ActFrmMyAcc,NULL,NULL,
                           "arroba64x64.gif",
                           Txt_Create_account,Txt_Create_account,
                           NULL);
@@ -512,7 +512,7 @@ static void Acc_PutLinkToRemoveMyAccount (void)
   {
    extern const char *Txt_Remove_account;
 
-   Lay_PutContextualLink (ActReqRemMyAcc,Acc_PutParamsToRemoveMyAccount,
+   Lay_PutContextualLink (ActReqRemMyAcc,NULL,Acc_PutParamsToRemoveMyAccount,
                           "remove-on64x64.png",
                           Txt_Remove_account,Txt_Remove_account,
                           NULL);
diff --git a/swad_agenda.c b/swad_agenda.c
index 9618caed..a46f2853 100644
--- a/swad_agenda.c
+++ b/swad_agenda.c
@@ -644,7 +644,7 @@ static void Agd_PutIconToCreateNewEvent (void)
 
    /***** Put form to create a new event *****/
    Gbl.Agenda.AgdCodToEdit = -1L;
-   Lay_PutContextualLink (ActFrmNewEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+   Lay_PutContextualLink (ActFrmNewEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
                           "plus64x64.png",
                           Txt_New_event,NULL,
                           NULL);
@@ -655,7 +655,7 @@ static void Agd_PutIconToViewEditMyFullAgenda (void)
    extern const char *Txt_Edit;
 
    /***** Put form to create a new event *****/
-   Lay_PutContextualLink (ActSeeMyAgd,NULL,
+   Lay_PutContextualLink (ActSeeMyAgd,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
@@ -683,8 +683,8 @@ static void Agd_PutIconsOtherPublicAgenda (void)
    /***** Button to view user's public profile *****/
    if (Pri_ShowingIsAllowed (Gbl.Usrs.Other.UsrDat.ProfileVisibility,
 		             &Gbl.Usrs.Other.UsrDat))
-      Lay_PutContextualLink (ActSeeOthPubPrf,
-			     Usr_PutParamOtherUsrCodEncrypted,
+      Lay_PutContextualLink (ActSeeOthPubPrf,NULL,
+                             Usr_PutParamOtherUsrCodEncrypted,
 			     "usr64x64.gif",
 			     Txt_Another_user_s_profile,NULL,
 			     NULL);
@@ -692,13 +692,13 @@ static void Agd_PutIconsOtherPublicAgenda (void)
    /***** Button to view user's record card *****/
    if (Usr_CheckIfICanViewRecordStd (&Gbl.Usrs.Other.UsrDat))
       /* View student's records: common record card and course record card */
-      Lay_PutContextualLink (ActSeeRecOneStd,
-			     Usr_PutParamOtherUsrCodEncrypted,
+      Lay_PutContextualLink (ActSeeRecOneStd,NULL,
+                             Usr_PutParamOtherUsrCodEncrypted,
 			     "card64x64.gif",
 			     Txt_View_record_for_this_course,NULL,
 			     NULL);
    else if (Usr_CheckIfICanViewRecordTch (&Gbl.Usrs.Other.UsrDat))
-      Lay_PutContextualLink (ActSeeRecOneTch,
+      Lay_PutContextualLink (ActSeeRecOneTch,NULL,
 			     Usr_PutParamOtherUsrCodEncrypted,
 			     "card64x64.gif",
 			     Txt_View_record_and_office_hours,NULL,
@@ -853,37 +853,37 @@ static void Agd_PutFormsToRemEditOneEvent (struct AgendaEvent *AgdEvent)
    Gbl.Agenda.AgdCodToEdit = AgdEvent->AgdCod;	// Used as parameter in contextual links
 
    /***** Put form to remove event *****/
-   Lay_PutContextualLink (ActReqRemEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+   Lay_PutContextualLink (ActReqRemEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
                           NULL);
 
    /***** Put form to hide/show event *****/
    if (AgdEvent->Hidden)
-      Lay_PutContextualLink (ActShoEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+      Lay_PutContextualLink (ActShoEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
                              "eye-slash-on64x64.png",
 			     Txt_Show,NULL,
                              NULL);
    else
-      Lay_PutContextualLink (ActHidEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+      Lay_PutContextualLink (ActHidEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
                              "eye-on64x64.png",
 			     Txt_Hide,NULL,
                              NULL);
 
    /***** Put form to edit event *****/
-   Lay_PutContextualLink (ActEdiOneEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+   Lay_PutContextualLink (ActEdiOneEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
 
    /***** Put form to make event public/private *****/
    if (AgdEvent->Public)
-      Lay_PutContextualLink (ActPrvEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+      Lay_PutContextualLink (ActPrvEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
 			     "unlock-on64x64.png",
 			     Txt_Event_visible_to_the_users_of_your_courses_click_to_make_it_private,NULL,
 			     NULL);
    else
-      Lay_PutContextualLink (ActPubEvtMyAgd,Agd_PutCurrentParamsMyAgenda,
+      Lay_PutContextualLink (ActPubEvtMyAgd,NULL,Agd_PutCurrentParamsMyAgenda,
 			     "lock-on64x64.png",
 			     Txt_Event_private_click_to_make_it_visible_to_the_users_of_your_courses,NULL,
 			     NULL);
diff --git a/swad_announcement.c b/swad_announcement.c
index f5d9c8fe..70e0b2ab 100644
--- a/swad_announcement.c
+++ b/swad_announcement.c
@@ -181,7 +181,7 @@ static void Ann_PutIconToAddNewAnnouncement (void)
   {
    extern const char *Txt_New_announcement;
 
-   Lay_PutContextualLink (ActWriAnn,NULL,
+   Lay_PutContextualLink (ActWriAnn,NULL,NULL,
                           "plus64x64.png",
                           Txt_New_announcement,NULL,
                           NULL);
@@ -308,7 +308,7 @@ static void Ann_DrawAnAnnouncement (long AnnCod,Ann_Status_t Status,
    if (ICanEdit)
      {
       /***** Put form to remove announcement *****/
-      Lay_PutContextualLink (ActRemAnn,Ann_PutParams,
+      Lay_PutContextualLink (ActRemAnn,NULL,Ann_PutParams,
 			     "remove-on64x64.png",
 			     Txt_Remove,NULL,
 			     NULL);
@@ -317,13 +317,13 @@ static void Ann_DrawAnAnnouncement (long AnnCod,Ann_Status_t Status,
       switch (Status)
 	{
 	 case Ann_ACTIVE_ANNOUNCEMENT:
-	    Lay_PutContextualLink (ActHidAnn,Ann_PutParams,
+	    Lay_PutContextualLink (ActHidAnn,NULL,Ann_PutParams,
 				   "eye-on64x64.png",
 				   Txt_NOTICE_Active_Mark_as_obsolete,NULL,
 				   NULL);
 	    break;
 	 case Ann_OBSOLETE_ANNOUNCEMENT:
-	    Lay_PutContextualLink (ActRevAnn,Ann_PutParams,
+	    Lay_PutContextualLink (ActRevAnn,NULL,Ann_PutParams,
 				   "eye-slash-on64x64.png",
 				   Txt_NOTICE_Obsolete_Mark_as_active,NULL,
 				   NULL);
@@ -361,7 +361,7 @@ static void Ann_DrawAnAnnouncement (long AnnCod,Ann_Status_t Status,
      }
    else
       /***** Put form to mark announcement as seen *****/
-      Lay_PutContextualLink (ActAnnSee,Ann_PutParams,
+      Lay_PutContextualLink (ActAnnSee,NULL,Ann_PutParams,
 			     "remove-on64x64.png",
 			     Txt_Do_not_show_again,Txt_Do_not_show_again,
 			     NULL);
diff --git a/swad_assignment.c b/swad_assignment.c
index 526de652..58e92f17 100644
--- a/swad_assignment.c
+++ b/swad_assignment.c
@@ -249,7 +249,7 @@ static void Asg_PutIconToCreateNewAsg (void)
    extern const char *Txt_New_assignment;
 
    /***** Put form to create a new assignment *****/
-   Lay_PutContextualLink (ActFrmNewAsg,Asg_PutParamsToCreateNewAsg,
+   Lay_PutContextualLink (ActFrmNewAsg,NULL,Asg_PutParamsToCreateNewAsg,
                           "plus64x64.png",
                           Txt_New_assignment,NULL,
                           NULL);
@@ -522,25 +522,25 @@ static void Asg_PutFormsToRemEditOneAsg (long AsgCod,bool Hidden)
    Gbl.Asgs.AsgCodToEdit = AsgCod;	// Used as parameter in contextual links
 
    /***** Put form to remove assignment *****/
-   Lay_PutContextualLink (ActReqRemAsg,Asg_PutParams,
+   Lay_PutContextualLink (ActReqRemAsg,NULL,Asg_PutParams,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
                           NULL);
 
    /***** Put form to hide/show assignment *****/
    if (Hidden)
-      Lay_PutContextualLink (ActShoAsg,Asg_PutParams,
+      Lay_PutContextualLink (ActShoAsg,NULL,Asg_PutParams,
                              "eye-slash-on64x64.png",
 			     Txt_Show,NULL,
                              NULL);
    else
-      Lay_PutContextualLink (ActHidAsg,Asg_PutParams,
+      Lay_PutContextualLink (ActHidAsg,NULL,Asg_PutParams,
                              "eye-on64x64.png",
 			     Txt_Hide,NULL,
                              NULL);
 
    /***** Put form to edit assignment *****/
-   Lay_PutContextualLink (ActEdiOneAsg,Asg_PutParams,
+   Lay_PutContextualLink (ActEdiOneAsg,NULL,Asg_PutParams,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_attendance.c b/swad_attendance.c
index c5e17462..2e41d0a6 100644
--- a/swad_attendance.c
+++ b/swad_attendance.c
@@ -175,7 +175,7 @@ void Att_SeeAttEvents (void)
 	   }
 
       /* Put link to my QR code */
-      Lay_PutContextualLink (ActPrnUsrQR,Usr_PutParamMyUsrCodEncrypted,
+      Lay_PutContextualLink (ActPrnUsrQR,NULL,Usr_PutParamMyUsrCodEncrypted,
 			     "qr64x64.gif",
 			     Txt_QR_code,Txt_QR_code,
 			     NULL);
@@ -317,7 +317,7 @@ static void Att_PutIconToCreateNewAttEvent (void)
    extern const char *Txt_New_event;
 
    /***** Put form to create a new attendance event *****/
-   Lay_PutContextualLink (ActFrmNewAtt,Att_PutParamsToCreateNewAttEvent,
+   Lay_PutContextualLink (ActFrmNewAtt,NULL,Att_PutParamsToCreateNewAttEvent,
                           "plus64x64.png",
                           Txt_New_event,NULL,
                           NULL);
@@ -509,7 +509,7 @@ static void Att_PutFormToListMyAttendance (void)
   {
    extern const char *Txt_Attendance_list;
 
-   Lay_PutContextualLink (ActSeeLstMyAtt,NULL,
+   Lay_PutContextualLink (ActSeeLstMyAtt,NULL,NULL,
                           "list64x64.gif",
                           Txt_Attendance_list,Txt_Attendance_list,
                           NULL);
@@ -523,7 +523,7 @@ static void Att_PutFormToListStdsAttendance (void)
   {
    extern const char *Txt_Attendance_list;
 
-   Lay_PutContextualLink (ActReqLstStdAtt,Att_PutFormToListStdsParams,
+   Lay_PutContextualLink (ActReqLstStdAtt,NULL,Att_PutFormToListStdsParams,
                           "list64x64.gif",
                           Txt_Attendance_list,Txt_Attendance_list,
                           NULL);
@@ -552,25 +552,25 @@ static void Att_PutFormsToRemEditOneAttEvent (long AttCod,bool Hidden)
    Gbl.AttEvents.AttCodToEdit = AttCod;	// Used as parameters in contextual links
 
    /***** Put form to remove attendance event *****/
-   Lay_PutContextualLink (ActReqRemAtt,Att_PutParams,
+   Lay_PutContextualLink (ActReqRemAtt,NULL,Att_PutParams,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
                           NULL);
 
    /***** Put form to hide/show attendance event *****/
    if (Hidden)
-      Lay_PutContextualLink (ActShoAtt,Att_PutParams,
+      Lay_PutContextualLink (ActShoAtt,NULL,Att_PutParams,
                              "eye-slash-on64x64.png",
 			     Txt_Show,NULL,
                              NULL);
    else
-      Lay_PutContextualLink (ActHidAtt,Att_PutParams,
+      Lay_PutContextualLink (ActHidAtt,NULL,Att_PutParams,
                              "eye-on64x64.png",
 			     Txt_Hide,NULL,
                              NULL);
 
    /***** Put form to edit attendance event *****/
-   Lay_PutContextualLink (ActEdiOneAtt,Att_PutParams,
+   Lay_PutContextualLink (ActEdiOneAtt,NULL,Att_PutParams,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
@@ -2971,7 +2971,7 @@ static void Att_PutIconToPrintMyList (void)
    extern const char *Txt_Print;
 
    /***** Link to print view *****/
-   Lay_PutContextualLink (ActPrnLstMyAtt,Att_PutFormToPrintMyListParams,
+   Lay_PutContextualLink (ActPrnLstMyAtt,NULL,Att_PutFormToPrintMyListParams,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -2994,7 +2994,7 @@ static void Att_PutIconToPrintStdsList (void)
    extern const char *Txt_Print;
 
    /***** Link to print view *****/
-   Lay_PutContextualLink (ActPrnLstStdAtt,Att_PutParamsToPrintStdsList,
+   Lay_PutContextualLink (ActPrnLstStdAtt,NULL,Att_PutParamsToPrintStdsList,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
diff --git a/swad_banner.c b/swad_banner.c
index be419f94..cd9393ed 100644
--- a/swad_banner.c
+++ b/swad_banner.c
@@ -82,7 +82,7 @@ void Ban_PutLinkToViewBanners (void)
   {
    extern const char *Txt_Banners;
 
-   Lay_PutContextualLink (ActSeeBan,NULL,
+   Lay_PutContextualLink (ActSeeBan,NULL,NULL,
                           "picture64x64.gif",
                           Txt_Banners,Txt_Banners,
                           NULL);
@@ -174,7 +174,7 @@ static void Ban_PutFormToEditBanners (void)
 
    if (Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)
       /***** Link to edit banners *****/
-      Lay_PutContextualLink (ActEdiBan,NULL,
+      Lay_PutContextualLink (ActEdiBan,NULL,NULL,
                              "edit64x64.png",
                              Txt_Edit,NULL,
                              NULL);
diff --git a/swad_calendar.c b/swad_calendar.c
index 80a99747..54d517fc 100644
--- a/swad_calendar.c
+++ b/swad_calendar.c
@@ -349,7 +349,7 @@ static void Cal_PutIconToPrintCalendarSys (void)
    extern const char *Txt_Print;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalSys,NULL,
+   Lay_PutContextualLink (ActPrnCalSys,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -360,7 +360,7 @@ static void Cal_PutIconToPrintCalendarCty (void)
    extern const char *Txt_Print;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalCty,NULL,
+   Lay_PutContextualLink (ActPrnCalCty,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -372,7 +372,7 @@ static void Cal_PutIconToPrintCalendarIns (void)
    extern const char *Txt_Holidays;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalIns,NULL,
+   Lay_PutContextualLink (ActPrnCalIns,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -380,7 +380,7 @@ static void Cal_PutIconToPrintCalendarIns (void)
    /***** View holidays *****/
    if (Gbl.Hlds.Num ||					// There are holidays
        Gbl.Usrs.Me.LoggedRole >= Rol_INS_ADM)	// Institution admin or system admin
-      Lay_PutContextualLink (ActSeeHld,NULL,
+      Lay_PutContextualLink (ActSeeHld,NULL,NULL,
 			     "holiday64x64.png",
 			     Txt_Holidays,NULL,
 			     NULL);
@@ -391,7 +391,7 @@ static void Cal_PutIconToPrintCalendarCtr (void)
    extern const char *Txt_Print;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalCtr,NULL,
+   Lay_PutContextualLink (ActPrnCalCtr,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -402,7 +402,7 @@ static void Cal_PutIconToPrintCalendarDeg (void)
    extern const char *Txt_Print;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalDeg,NULL,
+   Lay_PutContextualLink (ActPrnCalDeg,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -413,7 +413,7 @@ static void Cal_PutIconToPrintCalendarCrs (void)
    extern const char *Txt_Print;
 
    /***** Print calendar *****/
-   Lay_PutContextualLink (ActPrnCalCrs,NULL,
+   Lay_PutContextualLink (ActPrnCalCrs,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
diff --git a/swad_centre.c b/swad_centre.c
index 7e6a0612..1ae60f8d 100644
--- a/swad_centre.c
+++ b/swad_centre.c
@@ -671,7 +671,7 @@ static void Ctr_PutIconsToPrintAndUpload (void)
    extern const char *Txt_Print;
 
    /***** Link to print info about centre *****/
-   Lay_PutContextualLink (ActPrnCtrInf,NULL,
+   Lay_PutContextualLink (ActPrnCtrInf,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -706,7 +706,7 @@ static void Ctr_PutIconToChangePhoto (void)
 	    (unsigned)  Gbl.CurrentCtr.Ctr.CtrCod,
 	    (unsigned)  Gbl.CurrentCtr.Ctr.CtrCod);
    PhotoExists = Fil_CheckIfPathExists (PathPhoto);
-   Lay_PutContextualLink (ActReqCtrPho,NULL,
+   Lay_PutContextualLink (ActReqCtrPho,NULL,NULL,
 			  "photo64x64.gif",
 			  PhotoExists ? Txt_Change_photo :
 				        Txt_Upload_photo,NULL,
@@ -822,7 +822,7 @@ static void Ctr_PutIconToEditCentres (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiCtr,NULL,
+   Lay_PutContextualLink (ActEdiCtr,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_changelog.h b/swad_changelog.h
index f8b3c0b6..7e581109 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -214,13 +214,14 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.181 (2017-04-17)"
+#define Log_PLATFORM_VERSION	"SWAD 16.181.1 (2017-04-17)"
 #define CSS_FILE		"swad16.181.css"
 #define JS_FILE			"swad16.181.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 16.181.1: Apr 17, 2017	Code refactoring in forums. (217538 lines)
         Version 16.181:   Apr 17, 2017	Changes in layout of messages.
 					Changes in layout of some tables.
 					Fixed bug in forums. (217560 lines)
diff --git a/swad_connected.c b/swad_connected.c
index fddd79d7..2ab6c7de 100644
--- a/swad_connected.c
+++ b/swad_connected.c
@@ -141,7 +141,7 @@ void Con_PutLinkToLastClicks (void)
   {
    extern const char *Txt_Last_clicks;
 
-   Lay_PutContextualLink (ActLstClk,NULL,
+   Lay_PutContextualLink (ActLstClk,NULL,NULL,
                           "mouse-pointer64x64.png",
                           Txt_Last_clicks,Txt_Last_clicks,
                           NULL);
diff --git a/swad_country.c b/swad_country.c
index 7e8bcecc..83b5df0d 100644
--- a/swad_country.c
+++ b/swad_country.c
@@ -482,7 +482,7 @@ static void Cty_PutIconToPrint (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnCtyInf,NULL,
+   Lay_PutContextualLink (ActPrnCtyInf,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -774,7 +774,7 @@ static void Cty_PutIconToEditCountries (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiCty,NULL,
+   Lay_PutContextualLink (ActEdiCty,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_course.c b/swad_course.c
index 3433eb54..29be5d71 100644
--- a/swad_course.c
+++ b/swad_course.c
@@ -494,7 +494,7 @@ static void Crs_PutIconToPrint (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnCrsInf,NULL,
+   Lay_PutContextualLink (ActPrnCrsInf,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -1223,7 +1223,7 @@ static void Crs_PutIconToEditCourses (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiCrs,NULL,
+   Lay_PutContextualLink (ActEdiCrs,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
@@ -2908,7 +2908,7 @@ static void Crs_PutLinkToSearchCourses (void)
                           (Gbl.CurrentIns.Ins.InsCod > 0 ? ActInsReqSch :
                           (Gbl.CurrentCty.Cty.CtyCod > 0 ? ActCtyReqSch :
                                                            ActSysReqSch)))),
-                          Sch_PutLinkToSearchCoursesParams,
+                          NULL,Sch_PutLinkToSearchCoursesParams,
 			  "search64x64.gif",
 			  Txt_Search_courses,Txt_Search_courses,
                           NULL);
@@ -2929,7 +2929,7 @@ void Crs_PutFormToSelectMyCourses (void)
    extern const char *Txt_My_courses;
 
    /***** Put form to search / select courses *****/
-   Lay_PutContextualLink (ActMyCrs,NULL,
+   Lay_PutContextualLink (ActMyCrs,NULL,NULL,
                           "hierarchy64x64.gif",
                           Txt_My_courses,Txt_My_courses,
                           NULL);
@@ -3305,7 +3305,7 @@ void Crs_PutLinkToRemoveOldCrss (void)
    extern const char *Txt_Eliminate_old_courses;
 
    /***** Put form to remove old courses *****/
-   Lay_PutContextualLink (ActReqRemOldCrs,NULL,
+   Lay_PutContextualLink (ActReqRemOldCrs,NULL,NULL,
                           "remove-on64x64.png",
                           Txt_Eliminate_old_courses,Txt_Eliminate_old_courses,
                           NULL);
diff --git a/swad_degree.c b/swad_degree.c
index e294625a..0f729876 100644
--- a/swad_degree.c
+++ b/swad_degree.c
@@ -553,7 +553,7 @@ static void Deg_PutIconsToPrintAndUpload (void)
    extern const char *Txt_Print;
 
    /***** Link to print info about degree *****/
-   Lay_PutContextualLink (ActPrnDegInf,NULL,
+   Lay_PutContextualLink (ActPrnDegInf,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -1255,7 +1255,7 @@ static void Deg_PutIconToEditDegrees (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiDeg,NULL,
+   Lay_PutContextualLink (ActEdiDeg,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_degree_type.c b/swad_degree_type.c
index 2d94ad65..f1c8f704 100644
--- a/swad_degree_type.c
+++ b/swad_degree_type.c
@@ -130,7 +130,7 @@ void DT_PutIconToViewDegreeTypes (void)
   {
    extern const char *Txt_Types_of_degree;
 
-   Lay_PutContextualLink (ActSeeDegTyp,NULL,
+   Lay_PutContextualLink (ActSeeDegTyp,NULL,NULL,
                           "hierarchy64x64.png",
                           Txt_Types_of_degree,NULL,
                           NULL);
@@ -332,7 +332,7 @@ static void DT_PutIconToEditDegTypes (void)
 
    if (IsCentreTab &&				// Only editable in centre tab
        Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)	// Only editable by system admins
-      Lay_PutContextualLink (ActEdiDegTyp,NULL,
+      Lay_PutContextualLink (ActEdiDegTyp,NULL,NULL,
 			     "edit64x64.png",
 			     Txt_Edit,NULL,
 			     NULL);
diff --git a/swad_department.c b/swad_department.c
index feafba52..7081ded5 100644
--- a/swad_department.c
+++ b/swad_department.c
@@ -211,7 +211,7 @@ static void Dpt_PutIconToEditDpts (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiDpt,NULL,
+   Lay_PutContextualLink (ActEdiDpt,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_duplicate.c b/swad_duplicate.c
index 4348b368..18604d86 100644
--- a/swad_duplicate.c
+++ b/swad_duplicate.c
@@ -115,7 +115,7 @@ void Dup_PutLinkToListDupUsrs (void)
    extern const char *Txt_Duplicate_USERS;
 
    /***** Put form to remove old users *****/
-   Lay_PutContextualLink (ActLstDupUsr,NULL,
+   Lay_PutContextualLink (ActLstDupUsr,NULL,NULL,
                           "usrs64x64.gif",
                           Txt_Duplicate_USERS,Txt_Duplicate_USERS,
                           NULL);
diff --git a/swad_enrolment.c b/swad_enrolment.c
index 3c7d76e0..8d742314 100644
--- a/swad_enrolment.c
+++ b/swad_enrolment.c
@@ -180,7 +180,7 @@ void Enr_PutLinkToRequestSignUp (void)
    extern const char *Txt_Sign_up;
 
    /***** Show the form *****/
-   Lay_PutContextualLink (ActReqSignUp,NULL,
+   Lay_PutContextualLink (ActReqSignUp,NULL,NULL,
                           "enrollmentrequest64x64.gif",
                           Txt_Sign_up,Txt_Sign_up,
                           NULL);
@@ -681,7 +681,7 @@ void Enr_PutLinkToRemOldUsrs (void)
    extern const char *Txt_Eliminate_old_users;
 
    /***** Put form to remove old users *****/
-   Lay_PutContextualLink (ActReqRemOldUsr,NULL,
+   Lay_PutContextualLink (ActReqRemOldUsr,NULL,NULL,
                           "remove-on64x64.png",
                           Txt_Eliminate_old_users,Txt_Eliminate_old_users,
                           NULL);
@@ -1736,7 +1736,7 @@ static void Enr_PutLinkToRemAllStdsThisCrs (void)
    extern const char *Txt_Remove_all_students;
 
    /***** Put form to remove all the students in the current course *****/
-   Lay_PutContextualLink (ActReqRemAllStdCrs,NULL,
+   Lay_PutContextualLink (ActReqRemAllStdCrs,NULL,NULL,
                           "remove-on64x64.png",
                           Txt_Remove_all_students,Txt_Remove_all_students,
                           NULL);
@@ -2905,7 +2905,7 @@ void Enr_PutLinkToAdminOneUsr (Act_Action_t NextAction)
    const char *TitleText = Enr_ICanAdminOtherUsrs () ? Txt_Administer_one_user :
                         	                              Txt_Administer_me;
 
-   Lay_PutContextualLink (NextAction,NULL,
+   Lay_PutContextualLink (NextAction,NULL,NULL,
                           "config64x64.gif",
                           TitleText,TitleText,
                           NULL);
@@ -2924,7 +2924,8 @@ void Enr_PutLinkToAdminSeveralUsrs (Rol_Role_t Role)
 
    Lay_PutContextualLink (Role == Rol_STUDENT ? ActReqEnrSevStd :
 	                                        ActReqEnrSevTch,
-	                  NULL,"config64x64.gif",
+	                  NULL,NULL,
+	                  "config64x64.gif",
 	                  TitleText,TitleText,
                           NULL);
   }
diff --git a/swad_exam.c b/swad_exam.c
index 0bd3ca33..71725b7b 100644
--- a/swad_exam.c
+++ b/swad_exam.c
@@ -707,7 +707,7 @@ static void Exa_PutIconToCreateNewExamAnnouncement (void)
   {
    extern const char *Txt_New_announcement_OF_EXAM;
 
-   Lay_PutContextualLink (ActEdiExaAnn,NULL,
+   Lay_PutContextualLink (ActEdiExaAnn,NULL,NULL,
                           "plus64x64.png",
                           Txt_New_announcement_OF_EXAM,NULL,
                           NULL);
@@ -1546,7 +1546,7 @@ static void Exa_PutIconsExamAnnouncement (void)
        Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM)
      {
       /***** Link to remove this exam announcement *****/
-      Lay_PutContextualLink (ActReqRemExaAnn,Exa_PutParamExaCodToEdit,
+      Lay_PutContextualLink (ActReqRemExaAnn,NULL,Exa_PutParamExaCodToEdit,
                              "remove-on64x64.png",
 			     Txt_Remove,NULL,
                              NULL);
@@ -1555,13 +1555,13 @@ static void Exa_PutIconsExamAnnouncement (void)
       switch (Gbl.ExamAnns.ExaDat.Status)
         {
 	 case Exa_VISIBLE_EXAM_ANNOUNCEMENT:
-	    Lay_PutContextualLink (ActHidExaAnn,Exa_PutParamExaCodToEdit,
+	    Lay_PutContextualLink (ActHidExaAnn,NULL,Exa_PutParamExaCodToEdit,
 				   "eye-on64x64.png",
 				   Txt_Hide,NULL,
 				   NULL);
 	    break;
 	 case Exa_HIDDEN_EXAM_ANNOUNCEMENT:
-	    Lay_PutContextualLink (ActShoExaAnn,Exa_PutParamExaCodToEdit,
+	    Lay_PutContextualLink (ActShoExaAnn,NULL,Exa_PutParamExaCodToEdit,
 				   "eye-slash-on64x64.png",
 				   Txt_Show,NULL,
 				   NULL);
@@ -1571,14 +1571,14 @@ static void Exa_PutIconsExamAnnouncement (void)
         }
 
       /***** Link to edit this exam announcement *****/
-      Lay_PutContextualLink (ActEdiExaAnn,Exa_PutParamExaCodToEdit,
+      Lay_PutContextualLink (ActEdiExaAnn,NULL,Exa_PutParamExaCodToEdit,
                              "edit64x64.png",
 			     Txt_Edit,NULL,
                              NULL);
      }
 
    /***** Link to print view *****/
-   Lay_PutContextualLink (ActPrnExaAnn,Exa_PutParamExaCodToEdit,
+   Lay_PutContextualLink (ActPrnExaAnn,NULL,Exa_PutParamExaCodToEdit,
                           "print64x64.png",
 			  Txt_Print,NULL,
                           NULL);
diff --git a/swad_file_browser.c b/swad_file_browser.c
index 8f74f586..a1b2c301 100644
--- a/swad_file_browser.c
+++ b/swad_file_browser.c
@@ -3681,14 +3681,14 @@ static void Brw_PutIconsFileBrowser (void)
 	 break;
       case Brw_ICON_VIEW:
 	 Lay_PutContextualLink (Brw_ActFromAdmToSee[Gbl.FileBrowser.Type],
-				Brw_PutHiddenParamFullTreeIfSelected,
+				NULL,Brw_PutHiddenParamFullTreeIfSelected,
 				"eye-on64x64.png",
 				Txt_View,NULL,
 				NULL);
 	 break;
       case Brw_ICON_EDIT:
 	 Lay_PutContextualLink (Brw_ActFromSeeToAdm[Gbl.FileBrowser.Type],
-				Brw_PutHiddenParamFullTreeIfSelected,
+				NULL,Brw_PutHiddenParamFullTreeIfSelected,
 				"edit64x64.png",
 				Txt_Edit,NULL,
 				NULL);
@@ -11568,7 +11568,8 @@ static void Brw_PutLinkToAskRemOldFiles (void)
   {
    extern const char *Txt_Remove_old_files;
 
-   Lay_PutContextualLink (ActReqRemOldBrf,Brw_PutHiddenParamFullTreeIfSelected,
+   Lay_PutContextualLink (ActReqRemOldBrf,NULL,
+                          Brw_PutHiddenParamFullTreeIfSelected,
 			  "remove-on64x64.png",
 			  Txt_Remove_old_files,Txt_Remove_old_files,
                           NULL);
diff --git a/swad_follow.c b/swad_follow.c
index bec3d39d..825bea7a 100644
--- a/swad_follow.c
+++ b/swad_follow.c
@@ -94,7 +94,7 @@ void Fol_PutLinkWhoToFollow (void)
   {
    extern const char *Txt_Who_to_follow;
 
-   Lay_PutContextualLink (ActSeeSocPrf,NULL,
+   Lay_PutContextualLink (ActSeeSocPrf,NULL,NULL,
                           "follow64x64.png",
                           Txt_Who_to_follow,Txt_Who_to_follow,
                           NULL);
diff --git a/swad_forum.c b/swad_forum.c
index e7655ff1..63175bd9 100644
--- a/swad_forum.c
+++ b/swad_forum.c
@@ -284,7 +284,7 @@ static unsigned For_GetNumPstsInThr (long ThrCod);
 static unsigned For_GetNumMyPstInThr (long ThrCod);
 static time_t For_GetThrReadTime (long ThrCod);
 static void For_DeleteThrFromReadThrs (long ThrCod);
-static void For_ShowThreadPosts (long ThrCod);
+static void For_ShowThreadPosts (void);
 static void For_PutIconNewPost (void);
 
 static void For_ShowAForumPost (struct Forum *WhichForum,struct ForumThread *Thr,unsigned PstNum,long PstCod,
@@ -296,7 +296,7 @@ static void For_GetPstData (long PstCod,long *UsrCod,time_t *CreatTimeUTC,
                             struct Image *Image);
 static void For_WriteNumberOfPosts (struct Forum *WhichForum,long UsrCod);
 
-static void For_PutParamWhichForum (void);
+static void For_PutParamForumSet (void);
 static void For_PutParamForumOrder (void);
 
 static void For_PutIconsForums (void);
@@ -347,7 +347,6 @@ static void For_GetThrData (struct ForumThread *Thr);
 static void For_GetParamsForum (void);
 static void For_SetForumType (void);
 static void For_RestrictAccess (void);
-static long For_GetParamThrCod (void);
 static void For_PutHiddenParamPstCod (long PstCod);
 static long For_GetParamPstCod (void);
 
@@ -370,7 +369,6 @@ void For_EnbPst (void)
   {
    extern const char *Txt_Post_unbanned;
    long PstCod;
-   long ThrCod;
 
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
@@ -378,15 +376,12 @@ void For_EnbPst (void)
    /***** Get the post code to unban *****/
    PstCod = For_GetParamPstCod ();
 
-   /***** Get the thread number *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Delete post from table of disabled posts *****/
    For_DeletePstFromDisabledPstTable (PstCod);
    Lay_ShowAlert (Lay_SUCCESS,Txt_Post_unbanned);
 
    /***** Show the posts again *****/
-   For_ShowThreadPosts (ThrCod);
+   For_ShowThreadPosts ();
   }
 
 /*****************************************************************************/
@@ -397,7 +392,6 @@ void For_DisPst (void)
   {
    extern const char *Txt_Post_banned;
    long PstCod;
-   long ThrCod;
 
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
@@ -405,9 +399,6 @@ void For_DisPst (void)
    /***** Get the post code to ban *****/
    PstCod = For_GetParamPstCod ();
 
-   /***** Get the thread number *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Check if post really exists, if it has not been removed *****/
    if (For_GetIfForumPstExists (PstCod))
      {
@@ -419,7 +410,7 @@ void For_DisPst (void)
       Lay_ShowErrorAndExit ("The post to be banned no longer exists.");
 
    /***** Show the posts again *****/
-   For_ShowThreadPosts (ThrCod);
+   For_ShowThreadPosts ();
   }
 
 /*****************************************************************************/
@@ -963,7 +954,7 @@ void For_RemoveUsrFromReadThrs (long UsrCod)
 /************************ Show posts in a thread *****************************/
 /*****************************************************************************/
 
-static void For_ShowThreadPosts (long ThrCod)
+static void For_ShowThreadPosts (void)
   {
    extern const char *Hlp_SOCIAL_Forums;
    extern const char *Txt_Thread;
@@ -986,10 +977,10 @@ static void For_ShowThreadPosts (long ThrCod)
    bool ICanMoveThreads = (Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM);	// If I have permission to move threads...
 
    /***** Show threads *****/
-   For_ShowForumThreadsHighlightingOneThread (ThrCod);
+   For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.WhichForum.ThrCod);
 
    /***** Get data of the thread *****/
-   Thr.ThrCod = ThrCod;
+   Thr.ThrCod = Gbl.Forum.WhichForum.ThrCod;
    For_GetThrData (&Thr);
 
    /***** Get the page number *****/
@@ -1001,7 +992,7 @@ static void For_ShowThreadPosts (long ThrCod)
       Gbl.Forum.ThreadToMove = For_GetThrInMyClipboard ();
 
    /* Get thread read time for the current user */
-   ReadTimeUTC = For_GetThrReadTime (ThrCod);
+   ReadTimeUTC = For_GetThrReadTime (Gbl.Forum.WhichForum.ThrCod);
 
    /***** Start frame *****/
    fprintf (Gbl.F.Out,"<section id=\"%s\">",For_ID_FORUM_POSTS_SECTION);
@@ -1013,7 +1004,7 @@ static void For_ShowThreadPosts (long ThrCod)
    sprintf (Query,"SELECT PstCod,UNIX_TIMESTAMP(CreatTime)"
 	          " FROM forum_post"
                   " WHERE ThrCod=%ld ORDER BY PstCod",
-            ThrCod);
+            Gbl.Forum.WhichForum.ThrCod);
    NumRows = DB_QuerySELECT (Query,&mysql_res,"can not get posts of a thread");
    NumPsts = (unsigned) NumRows;
    LastSubject[0] = '\0';
@@ -1057,7 +1048,7 @@ static void For_ShowThreadPosts (long ThrCod)
       /***** Write links to pages *****/
       if (PaginationPsts.MoreThanOnePage)
          Pag_WriteLinksToPagesCentered (Pag_POSTS_FORUM,
-                                        ThrCod,
+                                        Gbl.Forum.WhichForum.ThrCod,
                                         &PaginationPsts);
 
       /***** Start table *****/
@@ -1083,7 +1074,7 @@ static void For_ShowThreadPosts (long ThrCod)
             /* Update forum_thr_read table indicating that this thread page and previous ones
                have been read and have no new posts for the current user
                (even if any previous pages have been no read actually) */
-            For_UpdateThrReadTime (ThrCod,CreatTimeUTC);
+            For_UpdateThrReadTime (Gbl.Forum.WhichForum.ThrCod,CreatTimeUTC);
 
          /* Show post */
          For_ShowAForumPost (&Gbl.Forum.WhichForum,&Thr,NumPst,PstCod,
@@ -1114,7 +1105,7 @@ static void For_ShowThreadPosts (long ThrCod)
       /***** Write again links to pages *****/
       if (PaginationPsts.MoreThanOnePage)
          Pag_WriteLinksToPagesCentered (Pag_POSTS_FORUM,
-                                        ThrCod,
+                                        Gbl.Forum.WhichForum.ThrCod,
                                         &PaginationPsts);
      }
 
@@ -1123,7 +1114,7 @@ static void For_ShowThreadPosts (long ThrCod)
 
    /***** Form to write a new post in the thread *****/
    fprintf (Gbl.F.Out,"<section id=\"%s\">",For_ID_NEW_POST_SECTION);
-   For_WriteFormForumPst (true,ThrCod,LastSubject);
+   For_WriteFormForumPst (true,Gbl.Forum.WhichForum.ThrCod,LastSubject);
    fprintf (Gbl.F.Out,"</section>");
 
    /***** End frame *****/
@@ -1139,10 +1130,11 @@ static void For_PutIconNewPost (void)
   {
    extern const char *Txt_New_post;
 
-   fprintf (Gbl.F.Out,"<a href=\"#%s\" title=\"%s\">",
-            For_ID_NEW_POST_SECTION,Txt_New_post);
-   Lay_PutIconWithText ("plus64x64.png",Txt_New_post,NULL);
-   fprintf (Gbl.F.Out,"</a>");
+   Lay_PutContextualLink (For_ActionsSeePstFor[Gbl.Forum.WhichForum.Type],
+                          For_ID_NEW_POST_SECTION,For_PutAllHiddenParamsForum,
+                          "plus64x64.png",
+                          Txt_New_post,NULL,
+                          NULL);
   }
 
 /*****************************************************************************/
@@ -1483,18 +1475,20 @@ static void For_WriteNumberOfPosts (struct Forum *WhichForum,long UsrCod)
 
 void For_PutAllHiddenParamsForum (void)
   {
-   For_PutParamWhichForum ();
+   For_PutParamForumSet ();
    For_PutParamForumOrder ();
    For_PutParamForumInsCtrDegCrs ();
+   if (Gbl.Forum.WhichForum.ThrCod > 0)	// A thread is selected
+      For_PutHiddenParamThrCod (Gbl.Forum.WhichForum.ThrCod);
   }
 
 /*****************************************************************************/
-/*********** Put a hidden parameter with which forum I want to see ***********/
+/********* Put a hidden parameter with set of forums I want to see ***********/
 /*****************************************************************************/
 
-static void For_PutParamWhichForum (void)
+static void For_PutParamForumSet (void)
   {
-   Par_PutHiddenParamUnsigned ("WhichForum",(unsigned) Gbl.Forum.ForumSet);
+   Par_PutHiddenParamUnsigned ("ForumSet",(unsigned) Gbl.Forum.ForumSet);
   }
 
 /*****************************************************************************/
@@ -1728,7 +1722,7 @@ static void For_PutIconsForums (void)
 
 static void For_PutFormWhichForums (void)
   {
-   extern const char *Txt_FORUM_WHICH_FORUM[For_NUM_WHICH_FORUMS];
+   extern const char *Txt_FORUM_WHICH_FORUM[For_NUM_FORUM_SETS];
    For_ForumSet_t ForumSet;
 
    /***** Form to select which forums I want to see:
@@ -1740,12 +1734,12 @@ static void For_PutFormWhichForums (void)
 	              "<ul>");
 
    for (ForumSet = (For_ForumSet_t) 0;
-	ForumSet < For_NUM_WHICH_FORUMS;
+	ForumSet < For_NUM_FORUM_SETS;
 	ForumSet++)
      {
       fprintf (Gbl.F.Out,"<li>"
                          "<label>"
-                         "<input type=\"radio\" name=\"WhichForum\""
+                         "<input type=\"radio\" name=\"ForumSet\""
                          " value=\"%u\"",
                (unsigned) ForumSet);
       if (ForumSet == Gbl.Forum.ForumSet)
@@ -2201,7 +2195,7 @@ static void For_WriteLinkToForum (struct Forum *WhichForum,
 
    /***** Write link to forum *****/
    Act_FormStartAnchor (NextAct,For_ID_FORUM_THREADS_SECTION);
-   For_PutParamWhichForum ();
+   For_PutParamForumSet ();
    For_PutParamForumOrder ();
    if (WhichForum->Location > 0)	// Code of forum institution, centre, degree or course
       Par_PutHiddenParamLong ("Location",WhichForum->Location);
@@ -2562,7 +2556,7 @@ static void For_ShowForumThreadsHighlightingOneThread (long ThrCodHighlighted)
          Act_FormStartAnchor (For_ActionsSeeFor[Gbl.Forum.WhichForum.Type],
                               For_ID_FORUM_THREADS_SECTION);
          Pag_PutHiddenParamPagNum (Pag_THREADS_FORUM,PaginationThrs.CurrentPage);
-         For_PutParamWhichForum ();
+         For_PutParamForumSet ();
          For_PutParamForumInsCtrDegCrs ();
          Par_PutHiddenParamUnsigned ("Order",(unsigned) Order);
 	 Act_LinkFormSubmit (Txt_FORUM_THREAD_HELP_ORDER[Order],"TIT_TBL",NULL);
@@ -3488,16 +3482,11 @@ static void For_GetThrData (struct ForumThread *Thr)
 
 void For_ShowThrPsts (void)
   {
-   long ThrCod;
-
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
 
-   /***** Get the identifier of the thread that user want to show *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Show the posts of that thread *****/
-   For_ShowThreadPosts (ThrCod);
+   For_ShowThreadPosts ();
   }
 
 /*****************************************************************************/
@@ -3527,12 +3516,15 @@ static void For_GetParamsForum (void)
          break;
      }
 
+   /***** Get optional parameter with code of a selected thread *****/
+   Gbl.Forum.WhichForum.ThrCod = Par_GetParToLong ("ThrCod");
+
    /***** Get which forums I want to see *****/
    Gbl.Forum.ForumSet = (For_ForumSet_t)
-			   Par_GetParToUnsignedLong ("WhichForum",
-						     0,
-						     For_NUM_WHICH_FORUMS - 1,
-						     (unsigned long) For_DEFAULT_WHICH_FORUMS);
+			Par_GetParToUnsignedLong ("ForumSet",
+						  0,
+						  For_NUM_FORUM_SETS - 1,
+						  (unsigned long) For_DEFAULT_FORUM_SET);
 
    /***** Get order type *****/
    Gbl.Forum.SelectedOrder = (For_Order_t)
@@ -3732,21 +3724,6 @@ void For_PutHiddenParamThrCod (long ThrCod)
    Par_PutHiddenParamLong ("ThrCod",ThrCod);
   }
 
-/*****************************************************************************/
-/********* Get the value of the parameter with the code of a thread **********/
-/*****************************************************************************/
-
-static long For_GetParamThrCod (void)
-  {
-   long ThrCod;
-
-   /***** Get thread code *****/
-   if ((ThrCod = Par_GetParToLong ("ThrCod")) <= 0)
-      Lay_ShowErrorAndExit ("Wrong thread code.");
-
-   return ThrCod;
-  }
-
 /*****************************************************************************/
 /************* Write a form parameter to specify a post code *****************/
 /*****************************************************************************/
@@ -3866,7 +3843,6 @@ void For_RecForumPst (void)
    extern const char *Txt_Post_sent;
    extern const char *Txt_Do_not_reload_this_page_because_the_post_will_be_sent_again_;
    bool PstIsAReply = false;
-   long ThrCod = 0;
    long PstCod = 0;
    unsigned NumUsrsToBeNotifiedByEMail;
    struct SocialPublishing SocPub;
@@ -3883,13 +3859,8 @@ void For_RecForumPst (void)
        Gbl.Action.Act == ActRcvRepForInsUsr || Gbl.Action.Act == ActRcvRepForInsTch ||
        Gbl.Action.Act == ActRcvRepForGenUsr || Gbl.Action.Act == ActRcvRepForGenTch ||
        Gbl.Action.Act == ActRcvRepForSWAUsr || Gbl.Action.Act == ActRcvRepForSWATch)
-     {
       PstIsAReply = true;
 
-      /* Get the code of the thread */
-      ThrCod = For_GetParamThrCod ();
-     }
-
    /***** Get page number *****/
    Gbl.Forum.CurrentPagePsts = Pag_GetParamPagNum (Pag_POSTS_FORUM);
 
@@ -3912,26 +3883,26 @@ void For_RecForumPst (void)
    /***** Create a new message *****/
    if (PstIsAReply)	// This post is a reply to another posts in the thread
      {
-      // ThrCod has been received from form
+      // Gbl.Forum.WhichForum.ThrCod has been received from form
 
       /***** Create last message of the thread *****/
-      PstCod = For_InsertForumPst (ThrCod,Gbl.Usrs.Me.UsrDat.UsrCod,
+      PstCod = For_InsertForumPst (Gbl.Forum.WhichForum.ThrCod,Gbl.Usrs.Me.UsrDat.UsrCod,
                                    Gbl.Msg.Subject,Content,&Image);
 
       /***** Modify last message of the thread *****/
-      For_UpdateThrLastPst (ThrCod,PstCod);
+      For_UpdateThrLastPst (Gbl.Forum.WhichForum.ThrCod,PstCod);
      }
    else			// This post is the first of a new thread
      {
       /***** Create new thread with unknown first and last message codes *****/
-      ThrCod = For_InsertForumThread (&Gbl.Forum.WhichForum,-1L);
+      Gbl.Forum.WhichForum.ThrCod = For_InsertForumThread (&Gbl.Forum.WhichForum,-1L);
 
       /***** Create first (and last) message of the thread *****/
-      PstCod = For_InsertForumPst (ThrCod,Gbl.Usrs.Me.UsrDat.UsrCod,
+      PstCod = For_InsertForumPst (Gbl.Forum.WhichForum.ThrCod,Gbl.Usrs.Me.UsrDat.UsrCod,
                                    Gbl.Msg.Subject,Content,&Image);
 
       /***** Update first and last posts of new thread *****/
-      For_UpdateThrFirstAndLastPst (ThrCod,PstCod,PstCod);
+      For_UpdateThrFirstAndLastPst (Gbl.Forum.WhichForum.ThrCod,PstCod,PstCod);
      }
 
    /***** Free image *****/
@@ -3977,7 +3948,7 @@ void For_RecForumPst (void)
      }
 
    /***** Show again the posts of this thread of the forum *****/
-   For_ShowThreadPosts (ThrCod);
+   For_ShowThreadPosts ();
   }
 
 /*****************************************************************************/
@@ -4004,7 +3975,6 @@ void For_DelPst (void)
    extern const char *Txt_Post_and_thread_removed;
    extern const char *Txt_Post_removed;
    long PstCod;
-   long ThrCod;
    struct UsrData UsrDat;
    time_t CreatTimeUTC;	// Creation time of a message
    char Subject[Cns_MAX_BYTES_SUBJECT + 1];
@@ -4015,12 +3985,9 @@ void For_DelPst (void)
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
 
-   /***** Get the code of the message to remove *****/
+   /***** Get the code of the post to remove *****/
    PstCod = For_GetParamPstCod ();
 
-   /***** Get the thread number *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Initialize image *****/
    Img_ImageConstructor (&Image);
 
@@ -4038,7 +4005,7 @@ void For_DelPst (void)
       Lay_ShowErrorAndExit ("You can not remove post because you aren't the author.");
 
    /* Check if the message is the last message in the thread */
-   if (PstCod != For_GetLastPstCod (ThrCod))
+   if (PstCod != For_GetLastPstCod (Gbl.Forum.WhichForum.ThrCod))
       Lay_ShowErrorAndExit ("You can not remove post because it is not the last of the thread.");
 
    /***** Remove the post *****/
@@ -4067,14 +4034,14 @@ void For_DelPst (void)
       Lay_ShowAlert (Lay_SUCCESS,Txt_Post_and_thread_removed);
 
       /* Show the remaining threads */
-      For_ShowForumThreadsHighlightingOneThread (ThrCod);
+      For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.WhichForum.ThrCod);
      }
    else
      {
       Lay_ShowAlert (Lay_SUCCESS,Txt_Post_removed);
 
       /* Show the remaining posts */
-      For_ShowThreadPosts (ThrCod);
+      For_ShowThreadPosts ();
      }
   }
 
@@ -4087,17 +4054,13 @@ void For_ReqDelThr (void)
    extern const char *Txt_Do_you_really_want_to_remove_the_entire_thread_X;
    extern const char *Txt_Do_you_really_want_to_remove_the_entire_thread;
    extern const char *Txt_Remove_thread;
-   long ThrCod;
    char Subject[Cns_MAX_BYTES_SUBJECT + 1];
 
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
 
-   /***** Get the identifier of the thread to remove *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Get subject of thread to delete *****/
-   For_GetThrSubject (ThrCod,Subject);
+   For_GetThrSubject (Gbl.Forum.WhichForum.ThrCod,Subject);
 
    /***** Request confirmation to remove the thread *****/
    if (Subject[0])
@@ -4109,7 +4072,7 @@ void For_ReqDelThr (void)
 
    Act_FormStart (For_ActionsDelThrFor[Gbl.Forum.WhichForum.Type]);
    For_PutAllHiddenParamsForum ();
-   For_PutHiddenParamThrCod (ThrCod);
+   For_PutHiddenParamThrCod (Gbl.Forum.WhichForum.ThrCod);
    Lay_PutRemoveButton (Txt_Remove_thread);
    Act_FormEnd ();
   }
@@ -4122,7 +4085,6 @@ void For_DelThr (void)
   {
    extern const char *Txt_Thread_X_removed;
    extern const char *Txt_Thread_removed;
-   long ThrCod = -1L;
    char Subject[Cns_MAX_BYTES_SUBJECT + 1];
 
    /***** Get parameters related to forum *****/
@@ -4131,14 +4093,11 @@ void For_DelThr (void)
    if (PermissionThreadDeletion[Gbl.Forum.WhichForum.Type] &
        (1 << Gbl.Usrs.Me.LoggedRole)) // If I have permission to remove thread in this forum...
      {
-      /***** Get code of thread to delete *****/
-      ThrCod = For_GetParamThrCod ();
-
       /***** Get subject of thread to delete *****/
-      For_GetThrSubject (ThrCod,Subject);
+      For_GetThrSubject (Gbl.Forum.WhichForum.ThrCod,Subject);
 
       /***** Remove the thread and all its posts *****/
-      For_RemoveThreadAndItsPsts (ThrCod);
+      For_RemoveThreadAndItsPsts (Gbl.Forum.WhichForum.ThrCod);
 
       /***** Write message confirming the deletion *****/
       if (Subject[0])
@@ -4154,7 +4113,7 @@ void For_DelThr (void)
       Lay_ShowErrorAndExit ("You can not remove threads in this forum.");
 
    /***** Show the threads again *****/
-   For_ShowForumThreadsHighlightingOneThread (ThrCod);
+   For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.WhichForum.ThrCod);
   }
 
 /*****************************************************************************/
@@ -4165,20 +4124,16 @@ void For_CutThr (void)
   {
    extern const char *Txt_Thread_X_marked_to_be_moved;
    extern const char *Txt_Thread_marked_to_be_moved;
-   long ThrCod;
    char Subject[Cns_MAX_BYTES_SUBJECT + 1];
 
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
 
-   /***** Get code of thread to cut *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Get subject of thread to cut *****/
-   For_GetThrSubject (ThrCod,Subject);
+   For_GetThrSubject (Gbl.Forum.WhichForum.ThrCod,Subject);
 
    /***** Mark the thread as cut *****/
-   For_InsertThrInClipboard (ThrCod);
+   For_InsertThrInClipboard (Gbl.Forum.WhichForum.ThrCod);
 
    /***** Write message confirming that thread has been marked to move it *****/
    if (Subject[0])
@@ -4189,7 +4144,7 @@ void For_CutThr (void)
    Lay_ShowAlert (Lay_SUCCESS,Gbl.Message);
 
    /***** Show the threads again *****/
-   For_ShowForumThreadsHighlightingOneThread (ThrCod);
+   For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.WhichForum.ThrCod);
   }
 
 /*****************************************************************************/
@@ -4202,20 +4157,16 @@ void For_PasteThr (void)
    extern const char *Txt_The_thread_is_already_in_this_forum;
    extern const char *Txt_Thread_X_moved_to_this_forum;
    extern const char *Txt_Thread_moved_to_this_forum;
-   long ThrCod;
    char Subject[Cns_MAX_BYTES_SUBJECT + 1];
 
    /***** Get parameters related to forum *****/
    For_GetParamsForum ();
 
-   /***** Get code of thread to paste *****/
-   ThrCod = For_GetParamThrCod ();
-
    /***** Get subject of thread to paste *****/
-   For_GetThrSubject (ThrCod,Subject);
+   For_GetThrSubject (Gbl.Forum.WhichForum.ThrCod,Subject);
 
    /***** Paste (move) the thread to current forum *****/
-   if (For_CheckIfThrBelongsToForum (ThrCod,&Gbl.Forum.WhichForum))
+   if (For_CheckIfThrBelongsToForum (Gbl.Forum.WhichForum.ThrCod,&Gbl.Forum.WhichForum))
      {
       if (Subject[0])
          sprintf (Gbl.Message,Txt_The_thread_X_is_already_in_this_forum,
@@ -4226,7 +4177,7 @@ void For_PasteThr (void)
      }
    else
      {
-      For_MoveThrToCurrentForum (ThrCod);
+      For_MoveThrToCurrentForum (Gbl.Forum.WhichForum.ThrCod);
       if (Subject[0])
          sprintf (Gbl.Message,Txt_Thread_X_moved_to_this_forum,
                   Subject);
@@ -4236,7 +4187,7 @@ void For_PasteThr (void)
      }
 
    /***** Show the threads again *****/
-   For_ShowForumThreadsHighlightingOneThread (ThrCod);
+   For_ShowForumThreadsHighlightingOneThread (Gbl.Forum.WhichForum.ThrCod);
   }
 
 /*****************************************************************************/
diff --git a/swad_forum.h b/swad_forum.h
index a15ff12b..36823873 100644
--- a/swad_forum.h
+++ b/swad_forum.h
@@ -39,13 +39,13 @@
 /************************ Public constants and types *************************/
 /*****************************************************************************/
 
-#define For_NUM_WHICH_FORUMS 2
+#define For_NUM_FORUM_SETS 2
 typedef enum
   {
    For_ONLY_CURRENT_FORUMS	= 0,
    For_ALL_MY_FORUMS		= 1,
   } For_ForumSet_t;	// Which set of forums I want to see: all my forums or only the forums of current institution/degree/course.
-#define For_DEFAULT_WHICH_FORUMS For_ONLY_CURRENT_FORUMS
+#define For_DEFAULT_FORUM_SET For_ONLY_CURRENT_FORUMS
 
 #define For_NUM_TYPES_FORUM 12
 typedef enum
@@ -66,8 +66,9 @@ typedef enum
 
 struct Forum
   {
-   For_ForumType_t Type;
-   long Location;	// Code of institution, centre, degree or course
+   For_ForumType_t Type;	// Type of forum
+   long Location;		// Code of institution, centre, degree or course
+   long ThrCod;			// Optional thread code
   };
 
 struct ForumThread
diff --git a/swad_global.c b/swad_global.c
index c8c36626..caf55798 100644
--- a/swad_global.c
+++ b/swad_global.c
@@ -406,9 +406,10 @@ void Gbl_InitializeGlobals (void)
    Gbl.Social.WhichUsrs = Soc_DEFAULT_WHICH_USRS;
 
    /* Forums */
-   Gbl.Forum.ForumSet = For_DEFAULT_WHICH_FORUMS;
+   Gbl.Forum.ForumSet = For_DEFAULT_FORUM_SET;
    Gbl.Forum.WhichForum.Type = (For_ForumType_t) 0;
    Gbl.Forum.WhichForum.Location = -1L;
+   Gbl.Forum.WhichForum.ThrCod = -1L;
    Gbl.Forum.SelectedOrder = For_DEFAULT_ORDER;
    Gbl.Forum.ThreadToMove = -1L;
    // Gbl.Forum.CurrentPageThrs = 1;	// TODO: Remove this line
diff --git a/swad_group.c b/swad_group.c
index d4404ba9..d6caf5d5 100644
--- a/swad_group.c
+++ b/swad_group.c
@@ -1595,7 +1595,7 @@ static void Grp_PutIconToEditGroups (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActReqEdiGrp,NULL,
+   Lay_PutContextualLink (ActReqEdiGrp,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_holiday.c b/swad_holiday.c
index 3711d90c..0e724206 100644
--- a/swad_holiday.c
+++ b/swad_holiday.c
@@ -213,7 +213,7 @@ static void Hld_PutIconToEditHlds (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiHld,NULL,
+   Lay_PutContextualLink (ActEdiHld,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_info.c b/swad_info.c
index 2985e911..0c549a96 100644
--- a/swad_info.c
+++ b/swad_info.c
@@ -469,7 +469,8 @@ void Inf_PutIconToEditInfo (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (Inf_ActionsEditInfo[Gbl.CurrentCrs.Info.Type],NULL,
+   Lay_PutContextualLink (Inf_ActionsEditInfo[Gbl.CurrentCrs.Info.Type],
+                          NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_institution.c b/swad_institution.c
index cb613d7c..754890cd 100644
--- a/swad_institution.c
+++ b/swad_institution.c
@@ -628,7 +628,7 @@ static void Ins_PutIconsToPrintAndUpload (void)
    extern const char *Txt_Print;
 
    /***** Link to print info about institution *****/
-   Lay_PutContextualLink (ActPrnInsInf,NULL,
+   Lay_PutContextualLink (ActPrnInsInf,NULL,NULL,
                           "print64x64.png",
                           Txt_Print,NULL,
                           NULL);
@@ -743,7 +743,7 @@ static void Ins_PutIconToEditInstitutions (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiIns,NULL,
+   Lay_PutContextualLink (ActEdiIns,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_layout.c b/swad_layout.c
index 5f3dea14..3903a0c9 100644
--- a/swad_layout.c
+++ b/swad_layout.c
@@ -1082,7 +1082,7 @@ static void Lay_ShowRightColumn (void)
 /**************** Show an icon with a link in contextual menu ****************/
 /*****************************************************************************/
 
-void Lay_PutContextualLink (Act_Action_t NextAction,
+void Lay_PutContextualLink (Act_Action_t NextAction,const char *Anchor,
                             void (*FuncParams) (),
                             const char *Icon,
                             const char *Title,const char *Text,
@@ -1096,7 +1096,7 @@ void Lay_PutContextualLink (Act_Action_t NextAction,
 				// jumping to the next line on narrow screens
 
    /***** Start form *****/
-   Act_FormStart (NextAction);
+   Act_FormStartAnchor (NextAction,Anchor);
    if (FuncParams)
       FuncParams ();
 
diff --git a/swad_layout.h b/swad_layout.h
index 62d185c9..d96c19f0 100644
--- a/swad_layout.h
+++ b/swad_layout.h
@@ -71,7 +71,7 @@ typedef enum
 
 void Lay_WriteStartOfPage (void);
 
-void Lay_PutContextualLink (Act_Action_t NextAction,
+void Lay_PutContextualLink (Act_Action_t NextAction,const char *Anchor,
                             void (*FuncParams) (),
                             const char *Icon,
                             const char *Title,const char *Text,
diff --git a/swad_link.c b/swad_link.c
index f7461081..509eb7e8 100644
--- a/swad_link.c
+++ b/swad_link.c
@@ -132,7 +132,7 @@ static void Lnk_PutIconToEditLinks (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiLnk,NULL,
+   Lay_PutContextualLink (ActEdiLnk,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
diff --git a/swad_logo.c b/swad_logo.c
index bf58e752..edb0554c 100644
--- a/swad_logo.c
+++ b/swad_logo.c
@@ -213,7 +213,7 @@ void Log_PutIconToChangeLogo (Sco_Scope_t Scope)
    LogoExists = Fil_CheckIfPathExists (PathLogo);
 
    /***** Link for changing / uploading the logo *****/
-   Lay_PutContextualLink (Action,NULL,
+   Lay_PutContextualLink (Action,NULL,NULL,
                           "logo64x64.png",
                           LogoExists ? Txt_Change_logo :
 		                       Txt_Upload_logo,NULL,
@@ -272,7 +272,7 @@ void Log_RequestLogo (Sco_Scope_t Scope)
      {
       /***** Form to remove photo *****/
       fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
-      Lay_PutContextualLink (ActionRem,NULL,
+      Lay_PutContextualLink (ActionRem,NULL,NULL,
                              "remove-on64x64.png",
                              Txt_Remove_logo,Txt_Remove_logo,
                              NULL);
diff --git a/swad_mail.c b/swad_mail.c
index e0ecd34c..91501fd4 100644
--- a/swad_mail.c
+++ b/swad_mail.c
@@ -179,7 +179,7 @@ static void Mai_PutIconToEditMailDomains (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiMai,NULL,
+   Lay_PutContextualLink (ActEdiMai,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
                           NULL);
@@ -1135,7 +1135,7 @@ void Mai_PutLinkToChangeOtherUsrEmails (void)
 
    /***** Link for changing the password *****/
    if (Gbl.Usrs.Other.UsrDat.UsrCod == Gbl.Usrs.Me.UsrDat.UsrCod)	// It's me
-      Lay_PutContextualLink (ActFrmMyAcc,NULL,
+      Lay_PutContextualLink (ActFrmMyAcc,NULL,NULL,
                              "msg64x64.gif",
 			     Txt_Change_email,Txt_Change_email,
                              NULL);
@@ -1143,7 +1143,7 @@ void Mai_PutLinkToChangeOtherUsrEmails (void)
       Lay_PutContextualLink ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActFrmMaiStd :
 	                     (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActFrmMaiTch :
 	                	                                                        ActFrmMaiOth),
-                             Usr_PutParamOtherUsrCodEncrypted,
+                             NULL,Usr_PutParamOtherUsrCodEncrypted,
                              "msg64x64.gif",
                              Txt_Change_email,Txt_Change_email,
                              NULL);
diff --git a/swad_message.c b/swad_message.c
index 8a53286a..90496baa 100644
--- a/swad_message.c
+++ b/swad_message.c
@@ -347,7 +347,8 @@ static void Msg_PutLinkToShowMorePotentialRecipients (void)
    extern const char *Txt_Show_more_recipients;
 
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (ActReqMsgUsr,Msg_PutParamsShowMorePotentialRecipients,
+   Lay_PutContextualLink (ActReqMsgUsr,NULL,
+                          Msg_PutParamsShowMorePotentialRecipients,
 			  "usrs64x64.gif",
 			  Txt_Show_more_recipients,Txt_Show_more_recipients,
                           "CopyMessageToHiddenFields()");
@@ -1867,7 +1868,7 @@ static void Msg_PutLinkToViewBannedUsers(void)
   {
    extern const char *Txt_Banned_users;
 
-   Lay_PutContextualLink (ActLstBanUsr,NULL,
+   Lay_PutContextualLink (ActLstBanUsr,NULL,NULL,
                           "stop16x16.gif",
                           Txt_Banned_users,Txt_Banned_users,
                           NULL);
@@ -2406,7 +2407,8 @@ static void Msg_PutIconToRemoveOneRcvMsg (void)
   {
    extern const char *Txt_Remove_this_message;
 
-   Lay_PutContextualLink (ActReqDelAllRcvMsg,Msg_PutHiddenParamsMsgsFilters,
+   Lay_PutContextualLink (ActReqDelAllRcvMsg,NULL,
+                          Msg_PutHiddenParamsMsgsFilters,
 			  "remove-on64x64.png",
 			  Txt_Remove_this_message,NULL,
                           NULL);
@@ -2420,7 +2422,8 @@ static void Msg_PutIconToRemoveSevRcvMsgs (void)
   {
    extern const char *Txt_Remove_these_messages;
 
-   Lay_PutContextualLink (ActReqDelAllRcvMsg,Msg_PutHiddenParamsMsgsFilters,
+   Lay_PutContextualLink (ActReqDelAllRcvMsg,NULL,
+                          Msg_PutHiddenParamsMsgsFilters,
 			  "remove-on64x64.png",
 			  Txt_Remove_these_messages,NULL,
                           NULL);
@@ -2434,7 +2437,8 @@ static void Msg_PutIconToRemoveOneSntMsg (void)
   {
    extern const char *Txt_Remove_this_message;
 
-   Lay_PutContextualLink (ActReqDelAllSntMsg,Msg_PutHiddenParamsMsgsFilters,
+   Lay_PutContextualLink (ActReqDelAllSntMsg,NULL,
+                          Msg_PutHiddenParamsMsgsFilters,
 			  "remove-on64x64.png",
 			  Txt_Remove_this_message,NULL,
                           NULL);
@@ -2448,7 +2452,8 @@ static void Msg_PutIconToRemoveSevSntMsgs (void)
   {
    extern const char *Txt_Remove_these_messages;
 
-   Lay_PutContextualLink (ActReqDelAllSntMsg,Msg_PutHiddenParamsMsgsFilters,
+   Lay_PutContextualLink (ActReqDelAllSntMsg,NULL,
+                          Msg_PutHiddenParamsMsgsFilters,
 			  "remove-on64x64.png",
 			  Txt_Remove_these_messages,NULL,
                           NULL);
diff --git a/swad_network.c b/swad_network.c
index 2168265e..ed8bf46d 100644
--- a/swad_network.c
+++ b/swad_network.c
@@ -275,7 +275,7 @@ void Net_PutLinkToChangeMySocialNetworks (void)
    extern const char *Txt_Edit_my_webs_networks;
 
    /***** Link to edit my social networks *****/
-   Lay_PutContextualLink (ActReqEdiMyNet,NULL,
+   Lay_PutContextualLink (ActReqEdiMyNet,NULL,NULL,
                           "earth64x64.gif",
                           Txt_Edit_my_webs_networks,Txt_Edit_my_webs_networks,
                           NULL);
diff --git a/swad_nickname.c b/swad_nickname.c
index 8a2ec9ef..732c1dce 100644
--- a/swad_nickname.c
+++ b/swad_nickname.c
@@ -253,7 +253,7 @@ void Nck_ShowFormChangeUsrNickname (void)
 
       /* Link to QR code */
       if (NumNick == 1 && Gbl.Usrs.Me.UsrDat.Nickname[0])
-         Lay_PutContextualLink (ActPrnUsrQR,Usr_PutParamMyUsrCodEncrypted,
+         Lay_PutContextualLink (ActPrnUsrQR,NULL,Usr_PutParamMyUsrCodEncrypted,
 				"qr64x64.gif",
 				Txt_QR_code,NULL,
 				NULL);
diff --git a/swad_notice.c b/swad_notice.c
index 590ad447..c79863a6 100644
--- a/swad_notice.c
+++ b/swad_notice.c
@@ -509,7 +509,7 @@ static void Not_PutIconToAddNewNotice (void)
   {
    extern const char *Txt_New_notice;
 
-   Lay_PutContextualLink (ActWriNot,NULL,
+   Lay_PutContextualLink (ActWriNot,NULL,NULL,
                           "plus64x64.png",
                           Txt_New_notice,NULL,
                           NULL);
@@ -636,7 +636,7 @@ static void Not_DrawANotice (Not_Listing_t TypeNoticesListing,
       if (Not_CheckIfICanEditNotices ())
 	{
 	 /***** Put form to remove announcement *****/
-	 Lay_PutContextualLink (ActReqRemNot,Not_PutParams,
+	 Lay_PutContextualLink (ActReqRemNot,NULL,Not_PutParams,
 				"remove-on64x64.png",
 				Txt_Remove,NULL,
 				NULL);
@@ -645,13 +645,13 @@ static void Not_DrawANotice (Not_Listing_t TypeNoticesListing,
          switch (Status)
            {
             case Not_ACTIVE_NOTICE:
-	       Lay_PutContextualLink (ActHidNot,Not_PutParams,
+	       Lay_PutContextualLink (ActHidNot,NULL,Not_PutParams,
 				      "eye-on64x64.png",
 				      Txt_NOTICE_Active_Mark_as_obsolete,NULL,
 				      NULL);
                break;
             case Not_OBSOLETE_NOTICE:
-	       Lay_PutContextualLink (ActRevNot,Not_PutParams,
+	       Lay_PutContextualLink (ActRevNot,NULL,Not_PutParams,
 				      "eye-slash-on64x64.png",
 				      Txt_NOTICE_Obsolete_Mark_as_active,NULL,
 				      NULL);
@@ -720,7 +720,7 @@ static void Not_DrawANotice (Not_Listing_t TypeNoticesListing,
 
       /* Put form to view full notice */
       fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">");
-      Lay_PutContextualLink (ActSeeOneNot,Not_PutParams,
+      Lay_PutContextualLink (ActSeeOneNot,NULL,Not_PutParams,
 			     "ellipsis32x32.gif",
 			     Txt_See_full_notice,NULL,
 			     NULL);
diff --git a/swad_notification.c b/swad_notification.c
index 04fa3699..c9b0cb7a 100644
--- a/swad_notification.c
+++ b/swad_notification.c
@@ -357,20 +357,20 @@ void Ntf_ShowMyNotifications (void)
 
    if (NumNotifications)	// TODO: Show message only when I don't have notificacions at all
       /* Put form to change notification preferences */
-      Lay_PutContextualLink (ActMrkNtfSee,NULL,
+      Lay_PutContextualLink (ActMrkNtfSee,NULL,NULL,
                              "eye-on64x64.png",
 			     Txt_Mark_all_notifications_as_read,
 			     Txt_Mark_all_NOTIFICATIONS_as_read,
                              NULL);
 
    /* Put form to change notification preferences */
-   Lay_PutContextualLink (ActEdiPrf,NULL,
+   Lay_PutContextualLink (ActEdiPrf,NULL,NULL,
                           "heart64x64.gif",
 			  Txt_Change_preferences,Txt_Preferences,
                           NULL);
 
    /* Put form to view allowed mail domains */
-   Lay_PutContextualLink (ActSeeMai,NULL,
+   Lay_PutContextualLink (ActSeeMai,NULL,NULL,
                           "msg64x64.gif",
 			  Txt_Email_domains_allowed_for_notifications,Txt_Domains,
                           NULL);
diff --git a/swad_password.c b/swad_password.c
index 22a3e6fc..5d99360a 100644
--- a/swad_password.c
+++ b/swad_password.c
@@ -222,7 +222,8 @@ void Pwd_PutLinkToSendNewPasswd (void)
   {
    extern const char *Txt_Forgotten_password;
 
-   Lay_PutContextualLink (ActReqSndNewPwd,Pwd_PutLinkToSendNewPasswdParams,
+   Lay_PutContextualLink (ActReqSndNewPwd,NULL,
+                          Pwd_PutLinkToSendNewPasswdParams,
                           "key64x64.gif",
                           Txt_Forgotten_password,Txt_Forgotten_password,
                           NULL);
@@ -859,7 +860,7 @@ void Pwd_PutLinkToChangeMyPassword (void)
    extern const char *Txt_Change_password;
 
    /***** Link for changing the password *****/
-   Lay_PutContextualLink (ActFrmChgMyPwd,NULL,
+   Lay_PutContextualLink (ActFrmChgMyPwd,NULL,NULL,
                           "key64x64.gif",
                           Txt_Change_password,Txt_Change_password,
                           NULL);
@@ -880,7 +881,7 @@ void Pwd_PutLinkToChangeOtherUsrPassword (void)
       Lay_PutContextualLink ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActFrmPwdStd :
 	                     (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActFrmPwdTch :
 	                	                                                        ActFrmPwdOth),
-                             Usr_PutParamOtherUsrCodEncrypted,
+                             NULL,Usr_PutParamOtherUsrCodEncrypted,
                              "key64x64.gif",
                              Txt_Change_password,Txt_Change_password,
                              NULL);
diff --git a/swad_photo.c b/swad_photo.c
index 9a714819..78a15e35 100644
--- a/swad_photo.c
+++ b/swad_photo.c
@@ -168,7 +168,8 @@ void Pho_PutLinkToChangeMyPhoto (void)
 		                                       Txt_Upload_photo;
 
    /***** Link for changing / uploading the photo *****/
-   Lay_PutContextualLink (ActReqMyPho,NULL,"photo64x64.gif",
+   Lay_PutContextualLink (ActReqMyPho,NULL,NULL,
+                          "photo64x64.gif",
                           TitleText,TitleText,
                           NULL);
   }
@@ -197,7 +198,7 @@ void Pho_PutLinkToChangeOtherUsrPhoto (void)
 	 Lay_PutContextualLink ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActReqStdPho :
 	                        (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActReqTchPho :
 	                                                                                   ActReqOthPho),	// Guest, visitor or admin
-	                        Usr_PutParamOtherUsrCodEncrypted,
+	                        NULL,Usr_PutParamOtherUsrCodEncrypted,
 	                        "photo64x64.gif",
 				TitleText,TitleText,
 				NULL);
@@ -214,7 +215,7 @@ static void Pho_PutIconToRequestRemoveMyPhoto (void)
 
    /***** Link to request the removal of my photo *****/
    if (Gbl.Usrs.Me.MyPhotoExists)
-      Lay_PutContextualLink (ActReqRemMyPho,NULL,
+      Lay_PutContextualLink (ActReqRemMyPho,NULL,NULL,
                              "remove-on64x64.png",
 			     Txt_Remove_photo,NULL,
 		             NULL);
@@ -236,7 +237,7 @@ static void Pho_PutIconToRequestRemoveOtherUsrPhoto (void)
       Lay_PutContextualLink ( Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_STUDENT ? ActReqRemStdPho :
 			     (Gbl.Usrs.Other.UsrDat.RoleInCurrentCrsDB == Rol_TEACHER ? ActReqRemTchPho :
 											ActReqRemOthPho),	// Guest, visitor or admin
-			     Usr_PutParamOtherUsrCodEncrypted,
+			     NULL,Usr_PutParamOtherUsrCodEncrypted,
 			     "remove-on64x64.png",
 			     Txt_Remove_photo,NULL,
 		             NULL);
@@ -1869,7 +1870,8 @@ static void Pho_PutIconToPrintDegreeStats (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnPhoDeg,Pho_PutLinkToPrintViewOfDegreeStatsParams,
+   Lay_PutContextualLink (ActPrnPhoDeg,NULL,
+                          Pho_PutLinkToPrintViewOfDegreeStatsParams,
                           "print64x64.png",
                           Txt_Print,NULL,
 		          NULL);
diff --git a/swad_place.c b/swad_place.c
index bec1ed4a..8bbd3a94 100644
--- a/swad_place.c
+++ b/swad_place.c
@@ -79,7 +79,7 @@ void Plc_PutIconToViewPlaces (void)
   {
    extern const char *Txt_Places;
 
-   Lay_PutContextualLink (ActSeePlc,NULL,
+   Lay_PutContextualLink (ActSeePlc,NULL,NULL,
                           "mapmarker64x64.png",
                           Txt_Places,NULL,
                           NULL);
@@ -231,7 +231,7 @@ static void Plc_PutIconToEditPlaces (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiPlc,NULL,
+   Lay_PutContextualLink (ActEdiPlc,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
 		          NULL);
diff --git a/swad_plugin.c b/swad_plugin.c
index e5262b43..08a53dac 100644
--- a/swad_plugin.c
+++ b/swad_plugin.c
@@ -153,7 +153,7 @@ static void Plg_PutIconToEditPlugins (void)
   {
    extern const char *Txt_Edit;
 
-   Lay_PutContextualLink (ActEdiPlg,NULL,
+   Lay_PutContextualLink (ActEdiPlg,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit,NULL,
 		          NULL);
diff --git a/swad_preference.c b/swad_preference.c
index 1aa9c208..000d740f 100644
--- a/swad_preference.c
+++ b/swad_preference.c
@@ -237,7 +237,7 @@ void Pre_RemoveOldPrefsFromIP (void)
 
 void Pre_PutLinkToChangeLanguage (void)
   {
-   Lay_PutContextualLink (ActEdiPrf,NULL,
+   Lay_PutContextualLink (ActEdiPrf,NULL,NULL,
                           "cty64x64.gif",
                           "Change language","Change language",
 		          NULL);
diff --git a/swad_privacy.c b/swad_privacy.c
index c916c0c5..03ea12c6 100644
--- a/swad_privacy.c
+++ b/swad_privacy.c
@@ -77,7 +77,7 @@ void Pri_PutLinkToChangeMyPrivacy (void)
    extern const char *Txt_Privacy;
 
    /***** Link to edit my privacy *****/
-   Lay_PutContextualLink (ActEdiPri,NULL,
+   Lay_PutContextualLink (ActEdiPri,NULL,NULL,
                           "lock64x64.png",
                           Txt_Privacy,Txt_Privacy,
 		          NULL);
diff --git a/swad_profile.c b/swad_profile.c
index d33ba68e..a59a133c 100644
--- a/swad_profile.c
+++ b/swad_profile.c
@@ -129,8 +129,7 @@ void Prf_PutLinkMyPublicProfile (void)
   {
    extern const char *Txt_My_public_profile;
 
-   Lay_PutContextualLink (ActSeeOthPubPrf,
-                          Usr_PutParamMyUsrCodEncrypted,
+   Lay_PutContextualLink (ActSeeOthPubPrf,NULL,Usr_PutParamMyUsrCodEncrypted,
                           "usr64x64.gif",
                           Txt_My_public_profile,Txt_My_public_profile,
 		          NULL);
@@ -144,7 +143,7 @@ void Prf_PutLinkRequestAnotherUserProfile (void)
   {
    extern const char *Txt_Another_user_s_profile;
 
-   Lay_PutContextualLink (ActReqOthPubPrf,NULL,
+   Lay_PutContextualLink (ActReqOthPubPrf,NULL,NULL,
                           "usr64x64.gif",
                           Txt_Another_user_s_profile,Txt_Another_user_s_profile,
 		          NULL);
diff --git a/swad_record.c b/swad_record.c
index db7dacbe..e9fbbd73 100644
--- a/swad_record.c
+++ b/swad_record.c
@@ -952,7 +952,7 @@ void Rec_PutLinkToEditRecordFields (void)
    extern const char *Txt_Edit_record_fields;
 
    /***** Link to edit record fields *****/
-   Lay_PutContextualLink (ActEdiRecFie,NULL,
+   Lay_PutContextualLink (ActEdiRecFie,NULL,NULL,
                           "edit64x64.png",
                           Txt_Edit_record_fields,Txt_Edit_record_fields,
 		          NULL);
@@ -2389,13 +2389,13 @@ static void Rec_PutIconsCommands (void)
 
       if (ItsMe)
          /***** Button to edit my record card *****/
-	 Lay_PutContextualLink (ActReqEdiRecCom,NULL,
+	 Lay_PutContextualLink (ActReqEdiRecCom,NULL,NULL,
 	                        "edit64x64.png",
 			        Txt_Edit_my_personal_data,NULL,
 		                NULL);
       if (ICanViewUsrProfile)
          /***** Button to view user's profile *****/
-         Lay_PutContextualLink (ActSeeOthPubPrf,
+         Lay_PutContextualLink (ActSeeOthPubPrf,NULL,
 			        Rec_PutParamUsrCodEncrypted,
 				"usr64x64.gif",
 				ItsMe ? Txt_My_public_profile :
@@ -2405,13 +2405,13 @@ static void Rec_PutIconsCommands (void)
       /***** Button to view user's record card *****/
       if (Usr_CheckIfICanViewRecordStd (Gbl.Record.UsrDat))
 	 /* View student's records: common record card and course record card */
-         Lay_PutContextualLink (ActSeeRecOneStd,
+         Lay_PutContextualLink (ActSeeRecOneStd,NULL,
 			        Rec_PutParamUsrCodEncrypted,
 				"card64x64.gif",
 				Txt_View_record_for_this_course,NULL,
 				NULL);
       else if (Usr_CheckIfICanViewRecordTch (Gbl.Record.UsrDat))
-	 Lay_PutContextualLink (ActSeeRecOneTch,
+	 Lay_PutContextualLink (ActSeeRecOneTch,NULL,
 				Rec_PutParamUsrCodEncrypted,
 				"card64x64.gif",
 				Txt_View_record_and_office_hours,NULL,
@@ -2419,14 +2419,12 @@ static void Rec_PutIconsCommands (void)
 
       /***** Button to view user's agenda *****/
       if (ItsMe)
-	 Lay_PutContextualLink (ActSeeMyAgd,
-				NULL,
+	 Lay_PutContextualLink (ActSeeMyAgd,NULL,NULL,
 				"calendar64x64.png",
 				Txt_Show_agenda,NULL,
 				NULL);
       else if (Usr_CheckIfICanViewUsrAgenda (Gbl.Record.UsrDat))
-	 Lay_PutContextualLink (ActSeeUsrAgd,
-				Rec_PutParamUsrCodEncrypted,
+	 Lay_PutContextualLink (ActSeeUsrAgd,NULL,Rec_PutParamUsrCodEncrypted,
 				"calendar64x64.png",
 				Txt_Show_agenda,NULL,
 				NULL);
@@ -2441,7 +2439,7 @@ static void Rec_PutIconsCommands (void)
 	 Lay_PutContextualLink ( Gbl.Record.UsrDat->RoleInCurrentCrsDB == Rol_STUDENT ? ActReqMdfStd :
 	                        (Gbl.Record.UsrDat->RoleInCurrentCrsDB == Rol_TEACHER ? ActReqMdfTch :
 	                        	                                                ActReqMdfOth),
-				Rec_PutParamUsrCodEncrypted,
+				NULL,Rec_PutParamUsrCodEncrypted,
 				"config64x64.gif",
 			        Txt_Administer_user,NULL,
 		                NULL);
@@ -2452,24 +2450,24 @@ static void Rec_PutIconsCommands (void)
 	{
 	 /***** Button to view user's assignments and works *****/
 	 if (ItsMe)	// I am a student
-	    Lay_PutContextualLink (ActAdmAsgWrkUsr,NULL,
+	    Lay_PutContextualLink (ActAdmAsgWrkUsr,NULL,NULL,
 			           "folder64x64.gif",
 			           Txt_View_homework,NULL,
 		                   NULL);
 	 else		// I am a teacher or superuser
-	    Lay_PutContextualLink (ActAdmAsgWrkCrs,Rec_PutParamsWorks,
+	    Lay_PutContextualLink (ActAdmAsgWrkCrs,NULL,Rec_PutParamsWorks,
 			           "folder64x64.gif",
 			           Txt_View_homework,NULL,
 		                   NULL);
 
 	 /***** Button to view user's test exams *****/
 	 if (ItsMe)
-	    Lay_PutContextualLink (ActSeeMyTstRes,NULL,
+	    Lay_PutContextualLink (ActSeeMyTstRes,NULL,NULL,
 			           "exam64x64.png",
 			           Txt_View_test_results,NULL,
 		                   NULL);
 	 else
-	    Lay_PutContextualLink (ActSeeUsrTstRes,Rec_PutParamsStudent,
+	    Lay_PutContextualLink (ActSeeUsrTstRes,NULL,Rec_PutParamsStudent,
 			           "exam64x64.png",
 			           Txt_View_test_results,NULL,
 		                   NULL);
@@ -2477,13 +2475,13 @@ static void Rec_PutIconsCommands (void)
 	 /***** Button to view user's attendance *****/
 	 if (ItsMe && IAmLoggedAsStudent)
 	    // As student, I can see my attendance
-	    Lay_PutContextualLink (ActSeeLstMyAtt,NULL,
+	    Lay_PutContextualLink (ActSeeLstMyAtt,NULL,NULL,
 				   "rollcall64x64.png",
 				   Txt_View_attendance,NULL,
 				   NULL);
 	 else if (IAmLoggedAsTeacher || IAmLoggedAsSysAdm)
 	    // As teacher, I can see attendance of the student
-	    Lay_PutContextualLink (ActSeeLstStdAtt,Rec_PutParamsStudent,
+	    Lay_PutContextualLink (ActSeeLstStdAtt,NULL,Rec_PutParamsStudent,
 				   "rollcall64x64.png",
 				   Txt_View_attendance,NULL,
 				   NULL);
@@ -2494,13 +2492,13 @@ static void Rec_PutIconsCommands (void)
 	  (Gbl.CurrentCrs.Crs.CrsCod > 0 &&				// A course is selected
 	   Gbl.Record.UsrDat->RoleInCurrentCrsDB == Rol_STUDENT &&	// He/she is a student in the current course
 	   IAmLoggedAsTeacher))						// I am a teacher in the current course
-	 Lay_PutContextualLink (ActPrnUsrQR,Rec_PutParamUsrCodEncrypted,
+	 Lay_PutContextualLink (ActPrnUsrQR,NULL,Rec_PutParamUsrCodEncrypted,
 				"qr64x64.gif",
 				Txt_QR_code,NULL,
 				NULL);
 
       /***** Button to send a message *****/
-      Lay_PutContextualLink (ActReqMsgUsr,Rec_PutParamsMsgUsr,
+      Lay_PutContextualLink (ActReqMsgUsr,NULL,Rec_PutParamsMsgUsr,
 			     "msg64x64.gif",
 			     Txt_Write_a_message,NULL,
 		             NULL);
@@ -2511,12 +2509,12 @@ static void Rec_PutIconsCommands (void)
 	 if (Fol_CheckUsrIsFollowerOf (Gbl.Usrs.Me.UsrDat.UsrCod,
 				       Gbl.Record.UsrDat->UsrCod))
 	    // I follow user
-	    Lay_PutContextualLink (ActUnfUsr,Rec_PutParamUsrCodEncrypted,
+	    Lay_PutContextualLink (ActUnfUsr,NULL,Rec_PutParamUsrCodEncrypted,
 				   "following64x64.png",
 				   Txt_Following_unfollow,NULL,
 				   NULL);	// Put button to unfollow, even if I can not view user's profile
 	 else if (ICanViewUsrProfile)
-	    Lay_PutContextualLink (ActFolUsr,Rec_PutParamUsrCodEncrypted,
+	    Lay_PutContextualLink (ActFolUsr,NULL,Rec_PutParamUsrCodEncrypted,
 				   "follow64x64.png",
 				   Txt_Follow,NULL,
 				   NULL);	// Put button to follow
@@ -3689,7 +3687,8 @@ void Rec_PutLinkToChangeMyInsCtrDpt (void)
    extern const char *Txt_Edit_my_institution;
 
    /***** Link to edit my institution, centre, department... *****/
-   Lay_PutContextualLink (ActReqEdiMyIns,NULL,"ins64x64.gif",
+   Lay_PutContextualLink (ActReqEdiMyIns,NULL,NULL,
+                          "ins64x64.gif",
                           Txt_Edit_my_institution,Txt_Edit_my_institution,
 		          NULL);
   }
diff --git a/swad_statistic.c b/swad_statistic.c
index 45132a8f..0cb23c18 100644
--- a/swad_statistic.c
+++ b/swad_statistic.c
@@ -640,7 +640,7 @@ void Sta_AskShowGblHits (void)
    if (Gbl.CurrentCrs.Crs.CrsCod > 0 &&			// Course selected
        (Gbl.Usrs.Me.LoggedRole == Rol_TEACHER ||
         Gbl.Usrs.Me.LoggedRole == Rol_SYS_ADM))
-      Lay_PutContextualLink (ActReqAccCrs,NULL,
+      Lay_PutContextualLink (ActReqAccCrs,NULL,NULL,
 			     "stats64x64.gif",
 			     Txt_Visits_to_course,Txt_Visits_to_course,
 		             NULL);
@@ -3927,7 +3927,7 @@ void Sta_PutIconToShowFigure (void)
   {
    extern const char *Txt_Show_statistic;
 
-   Lay_PutContextualLink (ActSeeUseGbl,Sta_PutParamsToShowFigure,
+   Lay_PutContextualLink (ActSeeUseGbl,NULL,Sta_PutParamsToShowFigure,
                           "pie64x64.gif",
                           Txt_Show_statistic,NULL,
                           NULL);
diff --git a/swad_survey.c b/swad_survey.c
index 441d5d03..809336d3 100644
--- a/swad_survey.c
+++ b/swad_survey.c
@@ -332,7 +332,7 @@ static void Svy_PutIconToCreateNewSvy (void)
   {
    extern const char *Txt_New_survey;
 
-   Lay_PutContextualLink (ActFrmNewSvy,Svy_PutParamsToCreateNewSvy,
+   Lay_PutContextualLink (ActFrmNewSvy,NULL,Svy_PutParamsToCreateNewSvy,
                           "plus64x64.png",
                           Txt_New_survey,NULL,
 		          NULL);
@@ -792,31 +792,31 @@ static void Svy_PutFormsToRemEditOneSvy (long SvyCod,bool Visible)
    Gbl.Svys.SvyCodToEdit = SvyCod;	// Used as parameters in contextual links
 
    /***** Put form to remove survey *****/
-   Lay_PutContextualLink (ActReqRemSvy,Svy_PutParams,
+   Lay_PutContextualLink (ActReqRemSvy,NULL,Svy_PutParams,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
 		          NULL);
 
    /***** Put form to reset survey *****/
-   Lay_PutContextualLink (ActReqRstSvy,Svy_PutParams,
+   Lay_PutContextualLink (ActReqRstSvy,NULL,Svy_PutParams,
                           "recycle64x64.png",
                           Txt_Reset,NULL,
 		          NULL);
 
    /***** Put form to hide/show survey *****/
    if (Visible)
-      Lay_PutContextualLink (ActHidSvy,Svy_PutParams,
+      Lay_PutContextualLink (ActHidSvy,NULL,Svy_PutParams,
                              "eye-on64x64.png",
 			     Txt_Hide,NULL,
 		             NULL);
    else
-      Lay_PutContextualLink (ActShoSvy,Svy_PutParams,
+      Lay_PutContextualLink (ActShoSvy,NULL,Svy_PutParams,
                              "eye-slash-on64x64.png",
 			     Txt_Show,NULL,
 		             NULL);
 
    /***** Put form to edit survey *****/
-   Lay_PutContextualLink (ActEdiOneSvy,Svy_PutParams,
+   Lay_PutContextualLink (ActEdiOneSvy,NULL,Svy_PutParams,
                           "edit64x64.png",
                           Txt_Edit,NULL,
 		          NULL);
@@ -3308,7 +3308,7 @@ static void Svy_PutIconToAddNewQuestion (void)
    extern const char *Txt_New_question;
 
    /***** Put form to create a new question *****/
-   Lay_PutContextualLink (ActEdiOneSvyQst,Svy_PutParams,
+   Lay_PutContextualLink (ActEdiOneSvyQst,NULL,Svy_PutParams,
                           "plus64x64.png",
                           Txt_New_question,NULL,
 		          NULL);
@@ -3496,7 +3496,7 @@ static void Svy_PutIconToRemoveOneQst (void)
   {
    extern const char *Txt_Remove;
 
-   Lay_PutContextualLink (ActReqRemSvyQst,Svy_PutParamsRemoveOneQst,
+   Lay_PutContextualLink (ActReqRemSvyQst,NULL,Svy_PutParamsRemoveOneQst,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
 		          NULL);
diff --git a/swad_syllabus.c b/swad_syllabus.c
index 9e1b8282..3a43a3b4 100644
--- a/swad_syllabus.c
+++ b/swad_syllabus.c
@@ -142,7 +142,7 @@ void Syl_PutFormWhichSyllabus (void)
                       "<ul class=\"LIST_LEFT\" style=\"margin:12px;\">");
 
    for (WhichSyllabus = (Syl_WhichSyllabus_t) 0;
-	WhichSyllabus < For_NUM_WHICH_FORUMS;
+	WhichSyllabus < For_NUM_FORUM_SETS;
 	WhichSyllabus++)
      {
       fprintf (Gbl.F.Out,"<li class=\"DAT LEFT_MIDDLE\""
diff --git a/swad_test.c b/swad_test.c
index b8618344..abad3a65 100644
--- a/swad_test.c
+++ b/swad_test.c
@@ -383,7 +383,8 @@ static void Tst_PutFormToViewResultsOfUsersTests (Act_Action_t Action)
    extern const char *Txt_Test_results;
 
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (Action,NULL,"exam64x64.png",
+   Lay_PutContextualLink (Action,NULL,NULL,
+                          "exam64x64.png",
 	                  Txt_Test_results,Txt_Test_results,
 		          NULL);
    fprintf (Gbl.F.Out,"</div>");
@@ -1332,21 +1333,21 @@ static void Tst_PutIconsTests (void)
      {
       /***** Put form to edit existing test questions *****/
       if (Gbl.Action.Act != ActEdiTstQst)
-	 Lay_PutContextualLink (ActEdiTstQst,NULL,
+	 Lay_PutContextualLink (ActEdiTstQst,NULL,NULL,
 				"edit64x64.png",
 				Txt_Edit,NULL,
 				NULL);
 
       /***** Put form to create a new test question *****/
       if (Gbl.Action.Act != ActEdiOneTstQst)
-	 Lay_PutContextualLink (ActEdiOneTstQst,NULL,
+	 Lay_PutContextualLink (ActEdiOneTstQst,NULL,NULL,
 				"plus64x64.png",
 				Txt_New_question,NULL,
 				NULL);
 
       /***** Put form to go to test configuration *****/
       if (Gbl.Action.Act != ActCfgTst)
-	 Lay_PutContextualLink (ActCfgTst,NULL,
+	 Lay_PutContextualLink (ActCfgTst,NULL,NULL,
 				"config64x64.gif",
 				Txt_Configure,NULL,
 				NULL);
@@ -5835,7 +5836,7 @@ static void Tst_PutIconToRemoveOneQst (void)
   {
    extern const char *Txt_Remove;
 
-   Lay_PutContextualLink (ActReqRemTstQst,Tst_PutParamsRemoveOneQst,
+   Lay_PutContextualLink (ActReqRemTstQst,NULL,Tst_PutParamsRemoveOneQst,
                           "remove-on64x64.png",
                           Txt_Remove,NULL,
 		          NULL);
diff --git a/swad_test_import.c b/swad_test_import.c
index 7495a13e..d77804bc 100644
--- a/swad_test_import.c
+++ b/swad_test_import.c
@@ -86,7 +86,7 @@ void TsI_PutFormToExportQuestions (void)
    extern const char *Txt_Export_questions;
 
    /***** Put a link to create a file with questions *****/
-   Lay_PutContextualLink (ActLstTstQst,TsI_PutParamsExportQsts,
+   Lay_PutContextualLink (ActLstTstQst,NULL,TsI_PutParamsExportQsts,
 		          "export16x16.gif",
 		          Txt_Export_questions_to_XML_file,Txt_Export_questions,
 		          NULL);
@@ -115,7 +115,7 @@ void TsI_PutFormToImportQuestions (void)
    extern const char *Txt_Import_questions;
 
    /***** Put a link to create a file with questions *****/
-   Lay_PutContextualLink (ActReqImpTstQst,NULL,
+   Lay_PutContextualLink (ActReqImpTstQst,NULL,NULL,
 		          "import16x16.gif",
 		          Txt_Import_questions_from_XML_file,
                           Txt_Import_questions,
diff --git a/swad_text.c b/swad_text.c
index c0c620e3..dec115d4 100644
--- a/swad_text.c
+++ b/swad_text.c
@@ -13442,7 +13442,7 @@ const char *Txt_FORUM_THREAD_ORDER[For_NUM_ORDERS] =
 #endif
 	};
 
-const char *Txt_FORUM_WHICH_FORUM[For_NUM_WHICH_FORUMS] =
+const char *Txt_FORUM_WHICH_FORUM[For_NUM_FORUM_SETS] =
    {
 	 // For_ONLY_CURRENT_FORUMS
 #if   L==1
diff --git a/swad_timetable.c b/swad_timetable.c
index 475af65c..7c8cf114 100644
--- a/swad_timetable.c
+++ b/swad_timetable.c
@@ -311,13 +311,13 @@ static void TT_PutContextualIcons (void)
    extern const char *Txt_Print;
 
    if (Gbl.TimeTable.ContextualIcons.PutIconEditCrsTT)
-      Lay_PutContextualLink (ActEdiCrsTT,Grp_PutParamWhichGrps,
+      Lay_PutContextualLink (ActEdiCrsTT,NULL,Grp_PutParamWhichGrps,
 			     "edit64x64.png",
 			     Txt_Edit,NULL,
 		             NULL);
 
    if (Gbl.TimeTable.ContextualIcons.PutIconEditOfficeHours)
-      Lay_PutContextualLink (ActEdiTut,NULL,
+      Lay_PutContextualLink (ActEdiTut,NULL,NULL,
                              "edit64x64.png",
 			     Txt_Edit_office_hours,NULL,
 		             NULL);
@@ -325,7 +325,7 @@ static void TT_PutContextualIcons (void)
    if (Gbl.TimeTable.ContextualIcons.PutIconPrint)
       Lay_PutContextualLink (Gbl.TimeTable.Type == TT_COURSE_TIMETABLE ? ActPrnCrsTT :
 								         ActPrnMyTT,
-			     Grp_PutParamWhichGrps,
+			     NULL,Grp_PutParamWhichGrps,
 			     "print64x64.png",
 			     Txt_Print,NULL,
 		             NULL);
@@ -390,7 +390,7 @@ static void TT_PutIconToViewCrsTT (void)
    extern const char *Txt_Show_timetable;
 
    /***** Link (form) to see course timetable *****/
-   Lay_PutContextualLink (ActSeeCrsTT,NULL,
+   Lay_PutContextualLink (ActSeeCrsTT,NULL,NULL,
                           "eye-on64x64.png",
                           Txt_Show_timetable,NULL,
 		          NULL);
@@ -405,7 +405,7 @@ static void TT_PutIconToViewMyTT (void)
    extern const char *Txt_Show_timetable;
 
    /***** Link (form) to see my timetable *****/
-   Lay_PutContextualLink (ActSeeMyTT,NULL,
+   Lay_PutContextualLink (ActSeeMyTT,NULL,NULL,
                           "eye-on64x64.png",
                           Txt_Show_timetable,NULL,
 		          NULL);
diff --git a/swad_user.c b/swad_user.c
index 6e4cfac6..f8040f7d 100644
--- a/swad_user.c
+++ b/swad_user.c
@@ -1998,7 +1998,7 @@ void Usr_PutLinkToLogin (void)
   {
    extern const char *Txt_Log_in;
 
-   Lay_PutContextualLink (ActFrmLogIn,NULL,
+   Lay_PutContextualLink (ActFrmLogIn,NULL,NULL,
                           "login-green64x64.png",
                           Txt_Log_in,Txt_Log_in,
 		          NULL);
@@ -3009,7 +3009,7 @@ void Usr_ShowFormsLogoutAndRole (void)
 
    /***** Link to log out *****/
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (ActLogOut,NULL,
+   Lay_PutContextualLink (ActLogOut,NULL,NULL,
                           "logout-red64x64.png",
                           Txt_Log_out,Txt_Log_out,
 		          NULL);
@@ -7087,7 +7087,7 @@ static void Usr_PutLinkToSeeAdmins (void)
    extern const char *Txt_ROLES_PLURAL_Abc[Rol_NUM_ROLES][Usr_NUM_SEXS];
 
    /***** Put form to list admins *****/
-   Lay_PutContextualLink (ActLstOth,NULL,
+   Lay_PutContextualLink (ActLstOth,NULL,NULL,
                           "adm16x16.gif",
                           Txt_ROLES_PLURAL_Abc[Rol_DEG_ADM][Usr_SEX_UNKNOWN],
                           Txt_ROLES_PLURAL_Abc[Rol_DEG_ADM][Usr_SEX_UNKNOWN],
@@ -7103,7 +7103,7 @@ static void Usr_PutLinkToSeeGuests (void)
    extern const char *Txt_ROLES_PLURAL_Abc[Rol_NUM_ROLES][Usr_NUM_SEXS];
 
    /***** Put form to list guests *****/
-   Lay_PutContextualLink (ActLstGst,NULL,
+   Lay_PutContextualLink (ActLstGst,NULL,NULL,
                           "usrs64x64.gif",
                           Txt_ROLES_PLURAL_Abc[Rol__GUEST_][Usr_SEX_UNKNOWN],
                           Txt_ROLES_PLURAL_Abc[Rol__GUEST_][Usr_SEX_UNKNOWN],
@@ -7659,7 +7659,7 @@ static void Usr_PutIconToPrintGsts (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnGstPho,Usr_ShowGstsAllDataParams,
+   Lay_PutContextualLink (ActPrnGstPho,NULL,Usr_ShowGstsAllDataParams,
 			  "print64x64.png",
 			  Txt_Print,NULL,
 		          NULL);
@@ -7669,7 +7669,7 @@ static void Usr_PutIconToPrintStds (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnStdPho,Usr_ShowStdsAllDataParams,
+   Lay_PutContextualLink (ActPrnStdPho,NULL,Usr_ShowStdsAllDataParams,
 			  "print64x64.png",
 			  Txt_Print,NULL,
 		          NULL);
@@ -7679,7 +7679,7 @@ static void Usr_PutIconToPrintTchs (void)
   {
    extern const char *Txt_Print;
 
-   Lay_PutContextualLink (ActPrnTchPho,Usr_ShowTchsAllDataParams,
+   Lay_PutContextualLink (ActPrnTchPho,NULL,Usr_ShowTchsAllDataParams,
 			  "print64x64.png",
 			  Txt_Print,NULL,
 		          NULL);
@@ -7693,7 +7693,7 @@ static void Usr_PutIconToShowGstsAllData (void)
   {
    extern const char *Txt_Show_all_data;
 
-   Lay_PutContextualLink (ActLstGstAll,Usr_ShowGstsAllDataParams,
+   Lay_PutContextualLink (ActLstGstAll,NULL,Usr_ShowGstsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,NULL,
 		          NULL);
@@ -7704,7 +7704,7 @@ static void Usr_PutLinkToShowGstsAllData (void)
    extern const char *Txt_Show_all_data;
 
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (ActLstGstAll,Usr_ShowGstsAllDataParams,
+   Lay_PutContextualLink (ActLstGstAll,NULL,Usr_ShowGstsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,Txt_Show_all_data,
 		          NULL);
@@ -7715,7 +7715,7 @@ static void Usr_PutIconToShowStdsAllData (void)
   {
    extern const char *Txt_Show_all_data;
 
-   Lay_PutContextualLink (ActLstStdAll,Usr_ShowStdsAllDataParams,
+   Lay_PutContextualLink (ActLstStdAll,NULL,Usr_ShowStdsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,NULL,
 		          NULL);
@@ -7726,7 +7726,7 @@ static void Usr_PutLinkToShowStdsAllData (void)
    extern const char *Txt_Show_all_data;
 
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (ActLstStdAll,Usr_ShowStdsAllDataParams,
+   Lay_PutContextualLink (ActLstStdAll,NULL,Usr_ShowStdsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,Txt_Show_all_data,
 		          NULL);
@@ -7737,7 +7737,7 @@ static void Usr_PutIconToShowTchsAllData (void)
   {
    extern const char *Txt_Show_all_data;
 
-   Lay_PutContextualLink (ActLstTchAll,Usr_ShowTchsAllDataParams,
+   Lay_PutContextualLink (ActLstTchAll,NULL,Usr_ShowTchsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,NULL,
 		          NULL);
@@ -7748,7 +7748,7 @@ static void Usr_PutLinkToShowTchsAllData (void)
    extern const char *Txt_Show_all_data;
 
    fprintf (Gbl.F.Out,"<div class=\"CONTEXT_MENU\">");
-   Lay_PutContextualLink (ActLstTchAll,Usr_ShowTchsAllDataParams,
+   Lay_PutContextualLink (ActLstTchAll,NULL,Usr_ShowTchsAllDataParams,
 			  "table64x64.gif",
 			  Txt_Show_all_data,Txt_Show_all_data,
 		          NULL);
diff --git a/swad_zip.c b/swad_zip.c
index 10f2c040..6eecb965 100644
--- a/swad_zip.c
+++ b/swad_zip.c
@@ -120,7 +120,8 @@ void ZIP_PutLinkToCreateZIPAsgWrk (void)
   {
    extern const char *Txt_Create_ZIP_file;
 
-   Lay_PutContextualLink (ActAdmAsgWrkCrs,ZIP_PutLinkToCreateZIPAsgWrkParams,
+   Lay_PutContextualLink (ActAdmAsgWrkCrs,NULL,
+                          ZIP_PutLinkToCreateZIPAsgWrkParams,
                           "download64x64.png",
                           Txt_Create_ZIP_file,Txt_Create_ZIP_file,
 		          NULL);