diff --git a/swad_agenda.c b/swad_agenda.c
index 305f93fd..f5e9713b 100644
--- a/swad_agenda.c
+++ b/swad_agenda.c
@@ -676,7 +676,6 @@ static void Agd_PutIconToShowQR (void)
              Cfg_URL_SWAD_CGI,
              Lan_STR_LANG_ID[Gbl.Prefs.Language],
              Gbl.Usrs.Me.UsrDat.Nickname);
-   Gbl.QR.Str = URL;
    QR_PutLinkToPrintQRCode (ActPrnAgdQR,
                             QR_PutParamQRString,URL);
   }
diff --git a/swad_attendance.c b/swad_attendance.c
index 8c68ce8e..49599684 100644
--- a/swad_attendance.c
+++ b/swad_attendance.c
@@ -171,8 +171,8 @@ static void Att_PutParamsToPrintStdsList (void *Events);
 static void Att_PutButtonToShowDetails (const struct Att_Events *Events);
 static void Att_ListEventsToSelect (const struct Att_Events *Events,
                                     Att_TypeOfView_t TypeOfView);
-static void Att_PutIconToViewAttEvents (void *Events);
-static void Att_PutIconToEditAttEvents (void *Events);
+static void Att_PutIconToViewAttEvents (__attribute__((unused)) void *Args);
+static void Att_PutIconToEditAttEvents (__attribute__((unused)) void *Args);
 static void Att_ListUsrsAttendanceTable (const struct Att_Events *Events,
                                          Att_TypeOfView_t TypeOfView,
 	                                 unsigned NumUsrsInList,
@@ -3202,12 +3202,12 @@ static void Att_ListEventsToSelect (const struct Att_Events *Events,
      {
       case Att_VIEW_ONLY_ME:
 	 Box_BoxBegin (NULL,Txt_Events,
-		       Att_PutIconToViewAttEvents,&Events,
+		       Att_PutIconToViewAttEvents,NULL,
 		       NULL,Box_NOT_CLOSABLE);
 	 break;
       case Att_VIEW_SEL_USR:
 	 Box_BoxBegin (NULL,Txt_Events,
-		       Att_PutIconToEditAttEvents,&Events,
+		       Att_PutIconToEditAttEvents,NULL,
 		       NULL,Box_NOT_CLOSABLE);
 	 break;
       case Att_PRNT_ONLY_ME:
@@ -3319,22 +3319,20 @@ static void Att_ListEventsToSelect (const struct Att_Events *Events,
 /*********** Put icon to list (without edition) attendance events ************/
 /*****************************************************************************/
 
-static void Att_PutIconToViewAttEvents (void *Events)
+static void Att_PutIconToViewAttEvents (__attribute__((unused)) void *Args)
   {
-   if (Events)	// Not used
-      Ico_PutContextualIconToView (ActSeeAtt,
-                                   NULL,NULL);
+   Ico_PutContextualIconToView (ActSeeAtt,
+				NULL,NULL);
   }
 
 /*****************************************************************************/
 /************ Put icon to list (with edition) attendance events **************/
 /*****************************************************************************/
 
-static void Att_PutIconToEditAttEvents (void *Events)
+static void Att_PutIconToEditAttEvents (__attribute__((unused)) void *Args)
   {
-   if (Events)	// Not used
-      Ico_PutContextualIconToEdit (ActSeeAtt,NULL,
-				   NULL,NULL);
+   Ico_PutContextualIconToEdit (ActSeeAtt,NULL,
+				NULL,NULL);
   }
 
 /*****************************************************************************/
diff --git a/swad_banner.c b/swad_banner.c
index 796123db..079cba81 100644
--- a/swad_banner.c
+++ b/swad_banner.c
@@ -78,7 +78,7 @@ static void Ban_SetEditingBanner (struct Ban_Banner *Ban);
 static struct Ban_Banner *Ban_GetEditingBanner (void);
 
 static void Ban_WriteListOfBanners (const struct Ban_Banners *Banners);
-static void Ban_PutIconsListingBanners (void *Banners);
+static void Ban_PutIconsListingBanners (__attribute__((unused)) void *Args);
 static void Ban_PutIconToEditBanners (void);
 static void Ban_EditBannersInternal (struct Ban_Banners *Banners,
                                      const struct Ban_Banner *Ban);
@@ -86,7 +86,7 @@ static void Ban_GetListBanners (struct Ban_Banners *Banners,
                                 MYSQL_RES **mysql_res,unsigned long NumRows);
 static void Ban_FreeListBanners (struct Ban_Banners *Banners);
 
-static void Ban_PutIconsEditingBanners (void *Banners);
+static void Ban_PutIconsEditingBanners (__attribute__((unused)) void *Args);
 
 static void Ban_ListBannersForEdition (struct Ban_Banners *Banners);
 static void Ban_PutParamBanCodToEdit (void *BanCod);
@@ -149,7 +149,7 @@ void Ban_SeeBanners (void)
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Banners,
-                 Ban_PutIconsListingBanners,&Banners,
+                 Ban_PutIconsListingBanners,NULL,
                  Hlp_SYSTEM_Banners,Box_NOT_CLOSABLE);
 
    /***** Write all banners *****/
@@ -208,17 +208,14 @@ static void Ban_WriteListOfBanners (const struct Ban_Banners *Banners)
 /***************** Put contextual icons in list of banners *******************/
 /*****************************************************************************/
 
-static void Ban_PutIconsListingBanners (void *Banners)
+static void Ban_PutIconsListingBanners (__attribute__((unused)) void *Args)
   {
-   if (Banners)	// Not used
-     {
-      /***** Put icon to view banners *****/
-      if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
-	 Ban_PutIconToEditBanners ();
+   /***** Put icon to view banners *****/
+   if (Gbl.Usrs.Me.Role.Logged == Rol_SYS_ADM)
+      Ban_PutIconToEditBanners ();
 
-      /***** Put icon to view links *****/
-      Lnk_PutIconToViewLinks ();
-     }
+   /***** Put icon to view links *****/
+   Lnk_PutIconToViewLinks ();
   }
 
 /*****************************************************************************/
@@ -266,7 +263,7 @@ static void Ban_EditBannersInternal (struct Ban_Banners *Banners,
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Banners,
-                 Ban_PutIconsEditingBanners,Banners,
+                 Ban_PutIconsEditingBanners,NULL,
                  Hlp_SYSTEM_Banners_edit,Box_NOT_CLOSABLE);
 
    /***** Put a form to create a new banner *****/
@@ -416,16 +413,13 @@ static void Ban_FreeListBanners (struct Ban_Banners *Banners)
 /**************** Put contextual icons in edition of banners *****************/
 /*****************************************************************************/
 
-static void Ban_PutIconsEditingBanners (void *Banners)
+static void Ban_PutIconsEditingBanners (__attribute__((unused)) void *Args)
   {
-   if (Banners)	// Not used
-     {
-      /***** Put icon to view banners *****/
-      Ban_PutIconToViewBanners ();
+   /***** Put icon to view banners *****/
+   Ban_PutIconToViewBanners ();
 
-      /***** Put icon to view links *****/
-      Lnk_PutIconToViewLinks ();
-     }
+   /***** Put icon to view links *****/
+   Lnk_PutIconToViewLinks ();
   }
 
 /*****************************************************************************/
diff --git a/swad_calendar.c b/swad_calendar.c
index 96d23060..236085a6 100644
--- a/swad_calendar.c
+++ b/swad_calendar.c
@@ -62,7 +62,7 @@ const bool Cal_DayIsValidAsFirstDayOfWeek[7] =
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static void Cal_PutIconsFirstDayOfWeek (void *Args);
+static void Cal_PutIconsFirstDayOfWeek (__attribute__((unused)) void *Args);
 
 static unsigned Cal_GetParamFirstDayOfWeek (void);
 
@@ -82,7 +82,7 @@ void Cal_PutIconsToSelectFirstDayOfWeek (void)
    extern const char *Txt_Calendar;
 
    Box_BoxBegin (NULL,Txt_Calendar,
-                 Cal_PutIconsFirstDayOfWeek,&Gbl,
+                 Cal_PutIconsFirstDayOfWeek,NULL,
                  Hlp_PROFILE_Settings_calendar,Box_NOT_CLOSABLE);
    Set_StartSettingsHead ();
    Cal_ShowFormToSelFirstDayOfWeek (ActChg1stDay,
@@ -95,11 +95,10 @@ void Cal_PutIconsToSelectFirstDayOfWeek (void)
 /************ Put contextual icons in first-day-of-week setting **************/
 /*****************************************************************************/
 
-static void Cal_PutIconsFirstDayOfWeek (void *Args)
+static void Cal_PutIconsFirstDayOfWeek (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_FIRST_DAY_OF_WEEK);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_FIRST_DAY_OF_WEEK);
   }
 
 /*****************************************************************************/
diff --git a/swad_changelog.h b/swad_changelog.h
index 9be0ccba..a9af645e 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -497,7 +497,7 @@ enscript -2 --landscape --color --file-align=2 --highlight --line-numbers -o - *
 En OpenSWAD:
 ps2pdf source.ps destination.pdf
 */
-#define Log_PLATFORM_VERSION	"SWAD 19.169 (2020-04-08)"
+#define Log_PLATFORM_VERSION	"SWAD 19.169.1 (2020-04-08)"
 #define CSS_FILE		"swad19.146.css"
 #define JS_FILE			"swad19.153.js"
 /*
@@ -548,6 +548,7 @@ Funci
 // TODO: Oresti Baños: cambiar ojos por candados en descriptores para prohibir/permitir y dejar los ojos para poder elegir descriptores
 // TODO: Integrar pull requests con traducciones del alemán del usuario eruedin en GitHub
 
+	Version 19.169.1: Apr 08, 2020	Mark some parameters as unused. (284999 lines)
 	Version 19.169:   Apr 08, 2020	Code refactoring in games and matches. (285024 lines)
 	Version 19.168:   Apr 07, 2020	Code refactoring in forums. (284866 lines)
 	Version 19.167:   Apr 06, 2020	Code refactoring in figures. (284772 lines)
diff --git a/swad_cookie.c b/swad_cookie.c
index 1832375c..baff62d0 100644
--- a/swad_cookie.c
+++ b/swad_cookie.c
@@ -52,7 +52,7 @@ extern struct Globals Gbl;
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static void Coo_PutIconsCookies (void *Args);
+static void Coo_PutIconsCookies (__attribute__((unused)) void *Args);
 
 /*****************************************************************************/
 /********************* Edit my preferences on cookies ************************/
@@ -69,7 +69,7 @@ void Coo_EditMyPrefsOnCookies (void)
 
    /***** Begin box and table *****/
    Box_BoxTableBegin (NULL,Txt_Cookies,
-                      Coo_PutIconsCookies,&Gbl,
+                      Coo_PutIconsCookies,NULL,
                       Hlp_PROFILE_Settings_cookies,Box_NOT_CLOSABLE,2);
 
    /***** Edit my preference about cookies *****/
@@ -102,11 +102,10 @@ void Coo_EditMyPrefsOnCookies (void)
 /***************** Put contextual icons in cookies preference ****************/
 /*****************************************************************************/
 
-static void Coo_PutIconsCookies (void *Args)
+static void Coo_PutIconsCookies (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_COOKIES);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_COOKIES);
   }
 
 /*****************************************************************************/
diff --git a/swad_date.c b/swad_date.c
index a73770b9..45ed0582 100644
--- a/swad_date.c
+++ b/swad_date.c
@@ -94,7 +94,7 @@ static const unsigned Dat_NumDaysMonth[1 + 12] =
 /**************************** Private prototypes *****************************/
 /*****************************************************************************/
 
-static void Dat_PutIconsDateFormat (void *Args);
+static void Dat_PutIconsDateFormat (__attribute__((unused)) void *Args);
 static unsigned Dat_GetParamDateFormat (void);
 
 /*****************************************************************************/
@@ -109,7 +109,7 @@ void Dat_PutBoxToSelectDateFormat (void)
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Dates,
-                 Dat_PutIconsDateFormat,&Gbl,
+                 Dat_PutIconsDateFormat,NULL,
                  Hlp_PROFILE_Settings_dates,Box_NOT_CLOSABLE);
 
    /***** Form with list of options *****/
@@ -147,11 +147,10 @@ void Dat_PutBoxToSelectDateFormat (void)
 /*************** Put contextual icons in date-format setting *****************/
 /*****************************************************************************/
 
-static void Dat_PutIconsDateFormat (void *Args)
+static void Dat_PutIconsDateFormat (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_DATE_FORMAT);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_DATE_FORMAT);
   }
 
 /*****************************************************************************/
diff --git a/swad_file_browser.c b/swad_file_browser.c
index 714f7fb7..30b3ff3e 100644
--- a/swad_file_browser.c
+++ b/swad_file_browser.c
@@ -1284,7 +1284,7 @@ static void Brw_GetSelectedGroupData (struct GroupData *GrpDat,bool AbortOnError
 static void Brw_ShowDataOwnerAsgWrk (struct UsrData *UsrDat);
 static void Brw_ShowFileBrowser (void);
 static void Brw_PutIconsFileBrowser (void *Args);
-static void Brw_PutIconShowFigure (void *Args);
+static void Brw_PutIconShowFigure (__attribute__((unused)) void *Args);
 static void Brw_PutButtonToShowEdit (void);
 static void Brw_WriteTopBeforeShowingFileBrowser (void);
 static void Brw_UpdateLastAccess (void);
@@ -2341,7 +2341,7 @@ static void Brw_PutParamsFileBrowser (const char *PathInTree,const char *FilFolL
      }
 
    /***** If full tree selected? *****/
-   Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+   Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
 
    /***** Path and file *****/
    if (PathInTree)
@@ -3206,7 +3206,7 @@ static void Brw_ShowFileBrowsersAsgWrkCrs (void)
 
    /***** Begin box and table *****/
    Box_BoxTableBegin ("100%",Txt_Assignments_and_other_works,
-		      Brw_PutIconShowFigure,&Gbl,
+		      Brw_PutIconShowFigure,NULL,
 		      Hlp_FILES_Homework_for_teachers,Box_NOT_CLOSABLE,0);
 
    /***** List the assignments and works of the selected users *****/
@@ -3296,7 +3296,7 @@ static void Brw_FormToChangeCrsGrpZone (void)
 
    /***** Begin form *****/
    Frm_StartForm (Brw_ActChgZone[Gbl.FileBrowser.Type]);
-   Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+   Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
 
    /***** List start *****/
    HTM_UL_Begin ("class=\"LIST_LEFT\"");
@@ -3736,11 +3736,11 @@ static void Brw_PutIconsFileBrowser (void *Args)
 	    break;
 	 case Brw_ICON_VIEW:
 	    Ico_PutContextualIconToView (Brw_ActFromAdmToSee[Gbl.FileBrowser.Type],
-					 Brw_PutHiddenParamFullTreeIfSelected,&Gbl);
+					 Brw_PutHiddenParamFullTreeIfSelected,&Gbl.FileBrowser.FullTree);
 	    break;
 	 case Brw_ICON_EDIT:
 	    Ico_PutContextualIconToEdit (Brw_ActFromSeeToAdm[Gbl.FileBrowser.Type],NULL,
-					 Brw_PutHiddenParamFullTreeIfSelected,&Gbl);
+					 Brw_PutHiddenParamFullTreeIfSelected,&Gbl.FileBrowser.FullTree);
 	    break;
 	}
 
@@ -3753,16 +3753,16 @@ static void Brw_PutIconsFileBrowser (void *Args)
 	 case Brw_ADMI_ASS_PRJ:
 	    break;
 	 default:
-	    Brw_PutIconShowFigure (&Gbl);
+	    Brw_PutIconShowFigure (NULL);
 	    break;
 	}
      }
   }
 
-static void Brw_PutIconShowFigure (void *Args)
+static void Brw_PutIconShowFigure (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      Fig_PutIconToShowFigure (Fig_FOLDERS_AND_FILES);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_FOLDERS_AND_FILES);
   }
 
 /*****************************************************************************/
@@ -3782,7 +3782,7 @@ static void Brw_PutButtonToShowEdit (void)
          if (Brw_ActFromAdmToSee[Gbl.FileBrowser.Type] != ActUnk)
            {
 	    Frm_StartForm (Brw_ActFromAdmToSee[Gbl.FileBrowser.Type]);
-	    Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+	    Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
 	    Btn_PutConfirmButton (Txt_View);
             Frm_EndForm ();
            }
@@ -3791,7 +3791,7 @@ static void Brw_PutButtonToShowEdit (void)
          if (Brw_ActFromSeeToAdm[Gbl.FileBrowser.Type] != ActUnk)
            {
 	    Frm_StartForm (Brw_ActFromSeeToAdm[Gbl.FileBrowser.Type]);
-	    Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+	    Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
 	    Btn_PutConfirmButton (Txt_Edit);
             Frm_EndForm ();
            }
@@ -4986,10 +4986,10 @@ static void Brw_PutParamsFullTree (void)
 /********* Put hidden parameter "full tree" if full tree is selected *********/
 /*****************************************************************************/
 
-void Brw_PutHiddenParamFullTreeIfSelected (void *Args)
+void Brw_PutHiddenParamFullTreeIfSelected (void *FullTree)
   {
-   if (Args)
-      if (Gbl.FileBrowser.FullTree)	// if not full tree selected ==> do not put hidden parameter
+   if (FullTree)
+      if (*((bool *) FullTree))	// Put hidden parameter only if full tree selected
 	 Par_PutHiddenParamChar ("FullTree",'Y');
   }
 
@@ -12138,7 +12138,7 @@ static void Brw_PutLinkToAskRemOldFiles (void)
    extern const char *Txt_Remove_old_files;
 
    Lay_PutContextualLinkIconText (ActReqRemOldBrf,NULL,
-				  Brw_PutHiddenParamFullTreeIfSelected,&Gbl,
+				  Brw_PutHiddenParamFullTreeIfSelected,&Gbl.FileBrowser.FullTree,
 				  "trash.svg",
 				  Txt_Remove_old_files);
   }
@@ -12161,7 +12161,7 @@ void Brw_AskRemoveOldFiles (void)
 
    /***** Begin form *****/
    Frm_StartForm (ActRemOldBrf);
-   Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+   Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Remove_old_files,
diff --git a/swad_file_browser.h b/swad_file_browser.h
index 03eb955f..43e77d21 100644
--- a/swad_file_browser.h
+++ b/swad_file_browser.h
@@ -195,7 +195,7 @@ void Brw_RemoveSomeInfoAboutCrsUsrFilesFromDB (long UsrCod,long CrsCod);
 void Brw_RemoveWrkFilesFromDB (long CrsCod,long UsrCod);
 void Brw_RemoveUsrFilesFromDB (long UsrCod);
 
-void Brw_PutHiddenParamFullTreeIfSelected (void *Args);
+void Brw_PutHiddenParamFullTreeIfSelected (void *FullTree);
 
 void Brw_CreateDirDownloadTmp (void);
 void Brw_AskEditWorksCrs (void *Args);
diff --git a/swad_forum.c b/swad_forum.c
index 0972618d..af27cb1a 100644
--- a/swad_forum.c
+++ b/swad_forum.c
@@ -344,7 +344,7 @@ static void For_PutHiddenParamThrCod (long ThrCod);
 static void For_PutHiddenParamPstCod (long PstCod);
 
 static void For_ShowForumList (struct For_Forums *Forums);
-static void For_PutIconsForums (void *Args);
+static void For_PutIconsForums (__attribute__((unused)) void *Args);
 static void For_PutFormWhichForums (const struct For_Forums *Forums);
 
 static void For_WriteLinksToGblForums (const struct For_Forums *Forums,
@@ -1593,7 +1593,7 @@ static void For_ShowForumList (struct For_Forums *Forums)
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Forums,
-                 For_PutIconsForums,&Gbl,
+                 For_PutIconsForums,NULL,
                  Hlp_MESSAGES_Forums,Box_NOT_CLOSABLE);
 
    /***** Put a form to select which forums *****/
@@ -1760,11 +1760,10 @@ static void For_ShowForumList (struct For_Forums *Forums)
 /********************** Put contextual icons in forums ***********************/
 /*****************************************************************************/
 
-static void For_PutIconsForums (void *Args)
+static void For_PutIconsForums (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_FORUMS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_FORUMS);
   }
 
 /*****************************************************************************/
diff --git a/swad_global.h b/swad_global.h
index 92a70b4e..3ec690f9 100644
--- a/swad_global.h
+++ b/swad_global.h
@@ -634,10 +634,6 @@ struct Globals
          double MaxPercent;
         } DegPhotos;
      } Stat;
-   struct
-     {
-      char *Str;
-     } QR;
 
    /* Cache */
    struct
diff --git a/swad_icon.c b/swad_icon.c
index 3a10053c..7441af90 100644
--- a/swad_icon.c
+++ b/swad_icon.c
@@ -66,7 +66,7 @@ const char *Ico_IconSetNames[Ico_NUM_ICON_SETS] =
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static void Ico_PutIconsIconSet (void *Args);
+static void Ico_PutIconsIconSet (__attribute__((unused)) void *Args);
 
 /*****************************************************************************/
 /*********** Get icon with extension from icon without extension *************/
@@ -147,11 +147,10 @@ void Ico_PutIconsToSelectIconSet (void)
 /***************** Put contextual icons in icon-set setting *******************/
 /*****************************************************************************/
 
-static void Ico_PutIconsIconSet (void *Args)
+static void Ico_PutIconsIconSet (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_ICON_SETS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_ICON_SETS);
   }
 
 /*****************************************************************************/
diff --git a/swad_language.c b/swad_language.c
index 06708247..9ef1d62b 100644
--- a/swad_language.c
+++ b/swad_language.c
@@ -65,7 +65,7 @@ const char *Lan_STR_LANG_ID[1 + Lan_NUM_LANGUAGES] = // ISO 639-1 language codes
 /****************************** Private prototypes ***************************/
 /*****************************************************************************/
 
-static void Lan_PutIconsLanguage (void *Args);
+static void Lan_PutIconsLanguage (__attribute__((unused)) void *Args);
 
 static void Lan_PutParamLanguage (void *Args);
 
@@ -91,7 +91,7 @@ void Lan_PutBoxToSelectLanguage (void)
    extern const char *Txt_Language;
 
    Box_BoxBegin (NULL,Txt_Language,
-                 Lan_PutIconsLanguage,&Gbl,
+                 Lan_PutIconsLanguage,NULL,
                  Hlp_PROFILE_Settings_language,Box_NOT_CLOSABLE);
    Lan_PutSelectorToSelectLanguage ();
    Box_BoxEnd ();
@@ -101,11 +101,10 @@ void Lan_PutBoxToSelectLanguage (void)
 /**************** Put contextual icons in language setting *******************/
 /*****************************************************************************/
 
-static void Lan_PutIconsLanguage (void *Args)
+static void Lan_PutIconsLanguage (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_LANGUAGES);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_LANGUAGES);
   }
 
 /*****************************************************************************/
diff --git a/swad_menu.c b/swad_menu.c
index a29053b1..c0a6cb43 100644
--- a/swad_menu.c
+++ b/swad_menu.c
@@ -176,7 +176,7 @@ static const Act_Action_t Mnu_MenuActions[Tab_NUM_TABS][Act_MAX_OPTIONS_IN_MENU_
 /****************************** Private prototypes ***************************/
 /*****************************************************************************/
 
-static void Mnu_PutIconsMenu (void *Args);
+static void Mnu_PutIconsMenu (__attribute__((unused)) void *Args);
 
 /*****************************************************************************/
 /******* When I change to another tab, go to the first option allowed ********/
@@ -276,7 +276,7 @@ void Mnu_PutIconsToSelectMenu (void)
    Mnu_Menu_t Menu;
 
    Box_BoxBegin (NULL,Txt_Menu,
-                 Mnu_PutIconsMenu,&Gbl,
+                 Mnu_PutIconsMenu,NULL,
                  Hlp_PROFILE_Settings_menu,Box_NOT_CLOSABLE);
    Set_StartSettingsHead ();
    Set_StartOneSettingSelector ();
@@ -301,11 +301,10 @@ void Mnu_PutIconsToSelectMenu (void)
 /******************* Put contextual icons in menu setting ********************/
 /*****************************************************************************/
 
-static void Mnu_PutIconsMenu (void *Args)
+static void Mnu_PutIconsMenu (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_MENUS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_MENUS);
   }
 
 /*****************************************************************************/
diff --git a/swad_network.c b/swad_network.c
index c0d18188..fea5b39d 100644
--- a/swad_network.c
+++ b/swad_network.c
@@ -195,7 +195,7 @@ static const char *Net_WebsAndSocialNetworksTitle[Net_NUM_WEBS_AND_SOCIAL_NETWOR
 static void Net_ShowAWebOrSocialNet (const char *URL,
                                      const char *Icon,const char *Title);
 
-static void Net_PutIconsWebsSocialNetworks (void *Args);
+static void Net_PutIconsWebsSocialNetworks (__attribute__((unused)) void *Args);
 
 static void Net_GetMyWebsAndSocialNetsFromForm (void);
 
@@ -287,7 +287,7 @@ void Net_ShowFormMyWebsAndSocialNets (void)
 	     "%upx",
 	     Rec_RECORD_WIDTH);
    Box_BoxBegin (StrRecordWidth,Txt_Webs_social_networks,
-	         Net_PutIconsWebsSocialNetworks,&Gbl,
+	         Net_PutIconsWebsSocialNetworks,NULL,
                  Hlp_PROFILE_Webs,Box_NOT_CLOSABLE);
 
    /***** Begin table *****/
@@ -364,11 +364,10 @@ void Net_ShowFormMyWebsAndSocialNets (void)
 /************** Put contextual icons in my web / social networks *************/
 /*****************************************************************************/
 
-static void Net_PutIconsWebsSocialNetworks (void *Args)
+static void Net_PutIconsWebsSocialNetworks (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_SOCIAL_NETWORKS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_SOCIAL_NETWORKS);
   }
 
 /*****************************************************************************/
diff --git a/swad_notification.c b/swad_notification.c
index 33a750a1..7dba1027 100644
--- a/swad_notification.c
+++ b/swad_notification.c
@@ -262,7 +262,7 @@ static const char *Ntf_Icons[Ntf_NUM_NOTIFY_EVENTS] =
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static void Ntf_PutIconsNotif (void *Args);
+static void Ntf_PutIconsNotif (__attribute__((unused)) void *Args);
 
 static void Ntf_WriteFormAllNotifications (bool AllNotifications);
 static bool Ntf_GetAllNotificationsFromForm (void);
@@ -372,7 +372,7 @@ void Ntf_ShowMyNotifications (void)
 
    /***** Begin box *****/
    Box_BoxBegin (NULL,Txt_Notifications,
-                 Ntf_PutIconsNotif,&Gbl,
+                 Ntf_PutIconsNotif,NULL,
                  Hlp_START_Notifications,Box_NOT_CLOSABLE);
 
    /***** List my notifications *****/
@@ -619,11 +619,10 @@ void Ntf_ShowMyNotifications (void)
 /****************** Put contextual icons in notifications ********************/
 /*****************************************************************************/
 
-static void Ntf_PutIconsNotif (void *Args)
+static void Ntf_PutIconsNotif (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_NOTIFY_EVENTS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_NOTIFY_EVENTS);
   }
 
 /*****************************************************************************/
diff --git a/swad_privacy.c b/swad_privacy.c
index 1ae0f16f..2af03ebd 100644
--- a/swad_privacy.c
+++ b/swad_privacy.c
@@ -66,7 +66,7 @@ const char *Pri_VisibilityDB[Pri_NUM_OPTIONS_PRIVACY] =
 /***************************** Private prototypes ****************************/
 /*****************************************************************************/
 
-static void Pri_PutIconsPrivacy (void *Args);
+static void Pri_PutIconsPrivacy (__attribute__((unused)) void *Args);
 
 static void Pri_PutFormVisibility (const char *TxtLabel,
                                    Act_Action_t Action,const char *ParamName,
@@ -98,7 +98,7 @@ void Pri_EditMyPrivacy (void)
 
    /***** Begin box and table *****/
    Box_BoxTableBegin (NULL,Txt_Privacy,
-                      Pri_PutIconsPrivacy,&Gbl,
+                      Pri_PutIconsPrivacy,NULL,
                       Hlp_PROFILE_Settings_privacy,Box_NOT_CLOSABLE,2);
 
    /***** Edit photo visibility *****/
@@ -136,11 +136,10 @@ void Pri_EditMyPrivacy (void)
 /****************** Put contextual icons in privacy setting ******************/
 /*****************************************************************************/
 
-static void Pri_PutIconsPrivacy (void *Args)
+static void Pri_PutIconsPrivacy (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_PRIVACY);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_PRIVACY);
   }
 
 /*****************************************************************************/
diff --git a/swad_record.c b/swad_record.c
index 6c933ef5..600b53f7 100644
--- a/swad_record.c
+++ b/swad_record.c
@@ -2643,7 +2643,7 @@ static void Rec_PutParamsWorks (void *Args)
       Rec_PutParamsStudent (&Gbl);
       Par_PutHiddenParamChar ("FullTree",'Y');	// By default, show all files
       Gbl.FileBrowser.FullTree = true;
-      Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+      Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
      }
   }
 
diff --git a/swad_setting.c b/swad_setting.c
index 8d368de7..31469518 100644
--- a/swad_setting.c
+++ b/swad_setting.c
@@ -61,7 +61,7 @@ extern struct Globals Gbl;
 /*****************************************************************************/
 
 static void Set_PutIconsToSelectSideCols (void);
-static void Set_PutIconsSideColumns (void *Args);
+static void Set_PutIconsSideColumns (__attribute__((unused)) void *Args);
 static void Set_UpdateSideColsOnUsrDataTable (void);
 
 /*****************************************************************************/
@@ -249,7 +249,7 @@ static void Set_PutIconsToSelectSideCols (void)
    char Icon[32 + 1];
 
    Box_BoxBegin (NULL,Txt_Columns,
-                 Set_PutIconsSideColumns,&Gbl,
+                 Set_PutIconsSideColumns,NULL,
                  Hlp_PROFILE_Settings_columns,Box_NOT_CLOSABLE);
    Set_StartSettingsHead ();
    Set_StartOneSettingSelector ();
@@ -277,11 +277,10 @@ static void Set_PutIconsToSelectSideCols (void)
 /************** Put contextual icons in side-columns setting *****************/
 /*****************************************************************************/
 
-static void Set_PutIconsSideColumns (void *Args)
+static void Set_PutIconsSideColumns (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_SIDE_COLUMNS);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_SIDE_COLUMNS);
   }
 
 /*****************************************************************************/
diff --git a/swad_theme.c b/swad_theme.c
index d7c04fe8..e0b95685 100644
--- a/swad_theme.c
+++ b/swad_theme.c
@@ -304,7 +304,7 @@ const char *The_ClassFormOutBoxBold[The_NUM_THEMES] =
 /****************************** Private prototypes ***************************/
 /*****************************************************************************/
 
-static void The_PutIconsTheme (void *Args);
+static void The_PutIconsTheme (__attribute__((unused)) void *Args);
 
 /*****************************************************************************/
 /************************ Put icons to select a theme ***********************/
@@ -318,7 +318,7 @@ void The_PutIconsToSelectTheme (void)
    char Icon[PATH_MAX + 1];
 
    Box_BoxBegin (NULL,Txt_Theme_SKIN,
-                 The_PutIconsTheme,&Gbl,
+                 The_PutIconsTheme,NULL,
                  Hlp_PROFILE_Settings_theme,Box_NOT_CLOSABLE);
    Set_StartSettingsHead ();
    Set_StartOneSettingSelector ();
@@ -347,11 +347,10 @@ void The_PutIconsToSelectTheme (void)
 /****************** Put contextual icons in theme setting ********************/
 /*****************************************************************************/
 
-static void The_PutIconsTheme (void *Args)
+static void The_PutIconsTheme (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_THEMES);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_THEMES);
   }
 
 /*****************************************************************************/
diff --git a/swad_timeline.c b/swad_timeline.c
index e7d933d0..5872651f 100644
--- a/swad_timeline.c
+++ b/swad_timeline.c
@@ -220,7 +220,7 @@ static void TL_DropTemporaryTablesUsedToQueryTimeline (void);
 
 static void TL_ShowTimeline (char *Query,
                              const char *Title,long NotCodToHighlight);
-static void TL_PutIconsTimeline (void *Args);
+static void TL_PutIconsTimeline (__attribute__((unused)) void *Args);
 
 static void TL_FormStart (Act_Action_t ActionGbl,Act_Action_t ActionUsr);
 static void TL_FormFavSha (Act_Action_t ActionGbl,Act_Action_t ActionUsr,
@@ -1088,7 +1088,7 @@ static void TL_ShowTimeline (char *Query,
 				Query);
    /***** Begin box *****/
    Box_BoxBegin (NULL,Title,
-                 TL_PutIconsTimeline,&Gbl,
+                 TL_PutIconsTimeline,NULL,
                  Hlp_START_Timeline,Box_NOT_CLOSABLE);
 
    /***** Put form to select users whom public activity is displayed *****/
@@ -1161,11 +1161,10 @@ static void TL_ShowTimeline (char *Query,
 /********************* Put contextual icons in timeline **********************/
 /*****************************************************************************/
 
-static void TL_PutIconsTimeline (void *Args)
+static void TL_PutIconsTimeline (__attribute__((unused)) void *Args)
   {
-   if (Args)
-      /***** Put icon to show a figure *****/
-      Fig_PutIconToShowFigure (Fig_TIMELINE);
+   /***** Put icon to show a figure *****/
+   Fig_PutIconToShowFigure (Fig_TIMELINE);
   }
 
 /*****************************************************************************/
diff --git a/swad_user.c b/swad_user.c
index d4bb9a03..3449fb74 100644
--- a/swad_user.c
+++ b/swad_user.c
@@ -6388,7 +6388,7 @@ void Usr_PutFormToSelectUsrsToGoToAct (struct SelectedUsrs *SelectedUsrs,
          if (NextAction == ActAdmAsgWrkCrs)
            {
             Gbl.FileBrowser.FullTree = true;	// By default, show all files
-            Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+            Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
            }
          if (FuncParams)
             FuncParams (Args);
diff --git a/swad_zip.c b/swad_zip.c
index 6bf24e93..114be434 100644
--- a/swad_zip.c
+++ b/swad_zip.c
@@ -103,7 +103,7 @@ static void ZIP_PutLinkToCreateZIPAsgWrkParams (void *Args)
    if (Args)
      {
       Usr_PutHiddenParSelectedUsrsCods (&Gbl.Usrs.Selected);
-      Brw_PutHiddenParamFullTreeIfSelected (&Gbl);
+      Brw_PutHiddenParamFullTreeIfSelected (&Gbl.FileBrowser.FullTree);
       Par_PutHiddenParamChar ("CreateZIP",'Y');
      }
   }