diff --git a/swad_centre.c b/swad_centre.c
index cc1d5a188..ea509e38b 100644
--- a/swad_centre.c
+++ b/swad_centre.c
@@ -707,24 +707,6 @@ static void Ctr_ListOneCentreForSeeing (struct Centre *Ctr,unsigned NumCtr)
 	    TxtClassNormal,BgColor,
 	    Ctr->NumCrss);
 
-   /***** Number of teachers in courses of this centre *****/
-   /*
-   fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
-		      "%u"
-		      "</td>",
-	    TxtClassNormal,BgColor,
-	    Ctr->NumTchs);
-   */
-
-   /***** Number of students in courses of this centre *****/
-   /*
-   fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
-		      "%u"
-		      "</td>",
-	    TxtClassNormal,BgColor,
-	    Ctr->NumStds);
-   */
-
    /***** Number of users in courses of this centre *****/
    fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
 		      "%u"
@@ -909,9 +891,7 @@ void Ctr_GetListCentres (long InsCod)
          Ctr->NumCrss = Crs_GetNumCrssInCtr (Ctr->CtrCod);
 
 	 /* Get number of users in courses of this centre */
-	 Ctr->NumUsrs = Usr_GetNumUsrsInCrssOfCtr (Rol_UNKNOWN,Ctr->CtrCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	 // Ctr->NumTchs = Usr_GetNumUsrsInCrssOfCtr (Rol_TEACHER,Ctr->CtrCod);
-	 // Ctr->NumStds = Usr_GetNumUsrsInCrssOfCtr (Rol_STUDENT,Ctr->CtrCod);
+	 Ctr->NumUsrs = Usr_GetNumUsrsInCrssOfCtr (Rol_UNKNOWN,Ctr->CtrCod);	// Here Rol_UNKNOWN means "all users"
         }
      }
    else
@@ -941,11 +921,8 @@ bool Ctr_GetDataOfCentreByCod (struct Centre *Ctr)
    Ctr->FullName[0]  = '\0';
    Ctr->WWW[0]       = '\0';
    Ctr->NumUsrsWhoClaimToBelongToCtr = 0;
-   Ctr->NumDegs = 0;
-   Ctr->NumCrss = 0;
+   Ctr->NumDegs = Ctr->NumCrss = 0;
    Ctr->NumUsrs = 0;
-   // Ctr->NumTchs = 0;
-   // Ctr->NumStds = 0;
 
    /***** Check if centre code is correct *****/
    if (Ctr->CtrCod > 0)
@@ -1008,9 +985,7 @@ bool Ctr_GetDataOfCentreByCod (struct Centre *Ctr)
          Ctr->NumCrss = Crs_GetNumCrssInCtr (Ctr->CtrCod);
 
 	 /* Get number of users in courses of this centre */
-	 Ctr->NumUsrs = Usr_GetNumUsrsInCrssOfCtr (Rol_UNKNOWN,Ctr->CtrCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	 // Ctr->NumTchs = Usr_GetNumUsrsInCrssOfCtr (Rol_TEACHER,Ctr->CtrCod);
-	 // Ctr->NumStds = Usr_GetNumUsrsInCrssOfCtr (Rol_STUDENT,Ctr->CtrCod);
+	 Ctr->NumUsrs = Usr_GetNumUsrsInCrssOfCtr (Rol_UNKNOWN,Ctr->CtrCod);	// Here Rol_UNKNOWN means "all users"
 
          /* Set return value */
          CtrFound = true;
@@ -1402,22 +1377,6 @@ static void Ctr_ListCentresForEdition (void)
 	}
       fprintf (Gbl.F.Out,"</td>");
 
-      /* Number of teachers */
-      /*
-      fprintf (Gbl.F.Out,"<td class=\"DAT RIGHT_MIDDLE\">"
-	                 "%u"
-	                 "</td>",
-               Ctr->NumTchs);
-      */
-
-      /* Number of degrees */
-      /*
-      fprintf (Gbl.F.Out,"<td class=\"DAT RIGHT_MIDDLE\">"
-	                 "%u"
-	                 "</td>",
-               Ctr->NumDegs);
-      */
-
       /* Centre status */
       StatusTxt = Ctr_GetStatusTxtFromStatusBits (Ctr->Status);
       fprintf (Gbl.F.Out,"<td class=\"DAT STATUS\">");
@@ -2234,12 +2193,6 @@ static void Ctr_PutHeadCentresForSeeing (bool OrderSelectable)
                       "<th class=\"LEFT_MIDDLE\">"
                       "%s"
                       "</th>"
-                      // "<th class=\"LEFT_MIDDLE\">"
-                      // "%s"
-                      // "</th>"
-                      // "<th class=\"LEFT_MIDDLE\">"
-                      // "%s"
-                      // "</th>"
                       "<th class=\"LEFT_MIDDLE\">"
                       "%s+<br />%s"
                       "</th>"
@@ -2250,8 +2203,6 @@ static void Ctr_PutHeadCentresForSeeing (bool OrderSelectable)
             Txt_Place,
 	    Txt_Degrees_ABBREVIATION,
 	    Txt_Courses_ABBREVIATION,
-            // Txt_Teachers_ABBREVIATION,
-            // Txt_Students_ABBREVIATION,
             Txt_Teachers_ABBREVIATION,
             Txt_Students_ABBREVIATION,
 	    Txt_Status);
diff --git a/swad_centre.h b/swad_centre.h
index 1b4acfdd0..9665b0c99 100644
--- a/swad_centre.h
+++ b/swad_centre.h
@@ -71,8 +71,6 @@ struct Centre
    unsigned NumDegs;		// Number of degrees in this centre
    unsigned NumCrss;		// Number of courses in this centre
    unsigned NumUsrs;		// Number of users in courses of this centre
-   // unsigned NumTchs;		// Number of teachers in courses of this centre
-   // unsigned NumStds;		// Number of students in courses of this centre
   };
 
 typedef enum
diff --git a/swad_changelog.h b/swad_changelog.h
index e9719a7e9..b8d6e4034 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -120,12 +120,13 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 15.66 (2015/12/14)"
+#define Log_PLATFORM_VERSION	"SWAD 15.66.1 (2015/12/14)"
 #define CSS_FILE		"swad15.65.1.css"
 
 // 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 15.66.1:  Dec 14, 2015	Removed unused code related to list of countries, institutions and centres by reasons of speed. (186966 lines)
         Version 15.66:    Dec 14, 2015	Number of teachers and number of students removed from list of countries, institutions and centres by reasons of speed. (187057 lines)
         Version 15.65.1:  Dec 14, 2015	Changes in layout of profile. (187031 lines)
         Version 15.65:    Dec 13, 2015	Change in layout of contextual links. (187009 lines)
diff --git a/swad_country.c b/swad_country.c
index 977b369ba..9fa64fc07 100644
--- a/swad_country.c
+++ b/swad_country.c
@@ -587,12 +587,6 @@ void Cty_ListCountries2 (void)
                          "<td class=\"DAT RIGHT_MIDDLE %s\">"
                          "%u"
                          "</td>"
-                         // "<td class=\"DAT RIGHT_MIDDLE %s\">"
-                         // "%u"
-                         // "</td>"
-                         // "<td class=\"DAT RIGHT_MIDDLE %s\">"
-                         // "%u"
-                         // "</td>"
                          "<td class=\"DAT RIGHT_MIDDLE %s\">"
                          "%u"
                          "</td>"
@@ -602,8 +596,6 @@ void Cty_ListCountries2 (void)
 	       BgColor,Gbl.Ctys.Lst[NumCty].NumCtrs,
 	       BgColor,Gbl.Ctys.Lst[NumCty].NumDegs,
 	       BgColor,Gbl.Ctys.Lst[NumCty].NumCrss,
-	       // BgColor,Gbl.Ctys.Lst[NumCty].NumTchs,
-	       // BgColor,Gbl.Ctys.Lst[NumCty].NumStds,
 	       BgColor,Gbl.Ctys.Lst[NumCty].NumUsrs);
       Gbl.RowEvenOdd = 1 - Gbl.RowEvenOdd;
      }
@@ -675,12 +667,6 @@ void Cty_ListCountries2 (void)
                       "<td class=\"DAT RIGHT_MIDDLE\">"
                       "%u"
                       "</td>"
-                      // "<td class=\"DAT RIGHT_MIDDLE\">"
-                      // "0"
-                      // "</td>"
-                      // "<td class=\"DAT RIGHT_MIDDLE\">"
-                      // "0"
-                      // "</td>"
                       "<td class=\"DAT RIGHT_MIDDLE\">"
                       "0"
                       "</td>"
@@ -1020,7 +1006,6 @@ void Cty_GetListCountries (Cty_GetExtraData_t GetExtraData)
         	 }
                Cty->NumUsrsWhoClaimToBelongToCty = 0;
                Cty->NumInss = Cty->NumCtrs = Cty->NumDegs = Cty->NumCrss = 0;
-               // Cty->NumUsrs = Cty->NumTchs = Cty->NumStds = 0;
                Cty->NumUsrs = 0;
 
                /* Get the name of the country in current language */
@@ -1053,9 +1038,7 @@ void Cty_GetListCountries (Cty_GetExtraData_t GetExtraData)
                Cty->NumCrss = Crs_GetNumCrssInCty (Cty->CtyCod);
 
                /* Get number of users in courses of this country */
-               Cty->NumUsrs = Usr_GetNumUsrsInCrssOfCty (Rol_UNKNOWN,Cty->CtyCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	       // Cty->NumStds = Usr_GetNumUsrsInCrssOfCty (Rol_STUDENT,Cty->CtyCod);
-	       // Cty->NumTchs = Usr_GetNumUsrsInCrssOfCty (Rol_TEACHER,Cty->CtyCod);
+               Cty->NumUsrs = Usr_GetNumUsrsInCrssOfCty (Rol_UNKNOWN,Cty->CtyCod);	// Here Rol_UNKNOWN means "all users"
                break;
            }
         }
@@ -1181,10 +1164,8 @@ bool Cty_GetDataOfCountryByCod (struct Country *Cty,Cty_GetExtraData_t GetExtraD
       Cty->WWW[Lan][0] = '\0';
      }
    Cty->NumUsrsWhoClaimToBelongToCty = 0;
+   Cty->NumInss = Cty->NumCtrs = Cty->NumDegs = Cty->NumCrss = 0;
    Cty->NumUsrs = 0;
-   // Cty->NumStds = 0;
-   // Cty->NumTchs = 0;
-   Cty->NumInss = 0;
 
    /***** Check if country code is correct *****/
    if (Cty->CtyCod == 0)
@@ -1280,9 +1261,7 @@ bool Cty_GetDataOfCountryByCod (struct Country *Cty,Cty_GetExtraData_t GetExtraD
 	       Cty->NumUsrsWhoClaimToBelongToCty = 0;
 
 	    /* Get number of user in courses of this institution */
-	    Cty->NumUsrs = Usr_GetNumUsrsInCrssOfCty (Rol_UNKNOWN,Cty->CtyCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	    // Cty->NumStds = Usr_GetNumUsrsInCrssOfCty (Rol_STUDENT,Cty->CtyCod);
-	    // Cty->NumTchs = Usr_GetNumUsrsInCrssOfCty (Rol_TEACHER,Cty->CtyCod);
+	    Cty->NumUsrs = Usr_GetNumUsrsInCrssOfCty (Rol_UNKNOWN,Cty->CtyCod);	// Here Rol_UNKNOWN means "all users"
 
 	    /* Get number of institutions in this country */
 	    Cty->NumInss = Ins_GetNumInssInCty (Cty->CtyCod);
diff --git a/swad_country.h b/swad_country.h
index dff872b30..303add3ad 100644
--- a/swad_country.h
+++ b/swad_country.h
@@ -53,8 +53,6 @@ struct Country
    unsigned NumDegs;
    unsigned NumCrss;
    unsigned NumUsrs;	// Number of users in courses of the institution
-   // unsigned NumStds;	// Number of students in courses of the institution
-   // unsigned NumTchs;	// Number of teachers in courses of the institution
   };
 
 typedef enum
diff --git a/swad_course.c b/swad_course.c
index 4355d96e5..d6e65af97 100644
--- a/swad_course.c
+++ b/swad_course.c
@@ -1051,8 +1051,8 @@ static void Crs_GetListCoursesInDegree (Crs_WhatCourses_t WhatCourses)
 
    if (NumRows) // Courses found...
      {
-      // NumRows should be equal to Deg->NumCourses
-      Gbl.CurrentDeg.Deg.NumCourses = (unsigned) NumRows;
+      // NumRows should be equal to Deg->NumCrss
+      Gbl.CurrentDeg.Deg.NumCrss = (unsigned) NumRows;
 
       /***** Create list with courses in degree *****/
       if ((Gbl.CurrentDeg.Deg.LstCrss = (struct Course *) calloc (NumRows,sizeof (struct Course))) == NULL)
@@ -1060,7 +1060,7 @@ static void Crs_GetListCoursesInDegree (Crs_WhatCourses_t WhatCourses)
 
       /***** Get the courses in degree *****/
       for (NumCrs = 0;
-	   NumCrs < Gbl.CurrentDeg.Deg.NumCourses;
+	   NumCrs < Gbl.CurrentDeg.Deg.NumCrss;
 	   NumCrs++)
         {
          Crs = &(Gbl.CurrentDeg.Deg.LstCrss[NumCrs]);
@@ -1071,7 +1071,7 @@ static void Crs_GetListCoursesInDegree (Crs_WhatCourses_t WhatCourses)
         }
      }
    else
-      Gbl.CurrentDeg.Deg.NumCourses = 0;
+      Gbl.CurrentDeg.Deg.NumCrss = 0;
 
    /***** Free structure that stores the query result *****/
    DB_FreeMySQLResult (&mysql_res);
@@ -1088,7 +1088,7 @@ void Crs_FreeListCoursesInDegree (struct Degree *Deg)
       /***** Free memory used by the list of courses in degree *****/
       free ((void *) Deg->LstCrss);
       Deg->LstCrss = NULL;
-      Deg->NumCourses = 0;
+      Deg->NumCrss = 0;
      }
   }
 
@@ -1186,7 +1186,7 @@ static void Crs_ListCourses (void)
    extern const char *Txt_Create_course;
    bool ICanEdit = (Gbl.Usrs.Me.LoggedRole >= Rol__GUEST_);
 
-   if (Gbl.CurrentDeg.Deg.NumCourses)	// There are courses in the current degree
+   if (Gbl.CurrentDeg.Deg.NumCrss)	// There are courses in the current degree
      {
       if (ICanEdit)
 	 Lay_PutFormToEdit (ActEdiCrs);
@@ -1210,7 +1210,7 @@ static void Crs_ListCourses (void)
 
 static void Crs_EditCourses (void)
   {
-   if (Gbl.CurrentDeg.Deg.NumCourses)
+   if (Gbl.CurrentDeg.Deg.NumCrss)
       /***** Put link (form) to view courses *****/
       Lay_PutFormToView (ActSeeCrs);
 
@@ -1218,7 +1218,7 @@ static void Crs_EditCourses (void)
    Crs_PutFormToCreateCourse ();
 
    /***** Forms to edit current courses *****/
-   if (Gbl.CurrentDeg.Deg.NumCourses)
+   if (Gbl.CurrentDeg.Deg.NumCrss)
       Crs_ListCoursesForEdition ();
   }
 
@@ -1271,7 +1271,7 @@ static bool Crs_ListCoursesOfAYearForSeeing (unsigned Year)
 
    /***** Write all the courses of this year *****/
    for (NumCrs = 0;
-	NumCrs < Gbl.CurrentDeg.Deg.NumCourses;
+	NumCrs < Gbl.CurrentDeg.Deg.NumCrss;
 	NumCrs++)
      {
       Crs = &(Gbl.CurrentDeg.Deg.LstCrss[NumCrs]);
@@ -1390,7 +1390,7 @@ static void Crs_ListCoursesForEdition (void)
 	Year <= Deg_MAX_YEARS_PER_DEGREE;
 	Year++)
       for (NumCrs = 0;
-	   NumCrs < Gbl.CurrentDeg.Deg.NumCourses;
+	   NumCrs < Gbl.CurrentDeg.Deg.NumCrss;
 	   NumCrs++)
         {
          Crs = &(Gbl.CurrentDeg.Deg.LstCrss[NumCrs]);
diff --git a/swad_degree.c b/swad_degree.c
index 63984c61d..fe5149886 100644
--- a/swad_degree.c
+++ b/swad_degree.c
@@ -447,7 +447,7 @@ static void Deg_Configuration (bool PrintView)
 	                    "</td>"
 			    "</tr>",
 		  The_ClassForm[Gbl.Prefs.Theme],
-		  Txt_Courses,Gbl.CurrentDeg.Deg.NumCourses);
+		  Txt_Courses,Gbl.CurrentDeg.Deg.NumCrss);
 
 	 /***** Number of teachers *****/
 	 fprintf (Gbl.F.Out,"<tr>"
@@ -1313,11 +1313,11 @@ static void Deg_ListOneDegreeForSeeing (struct Degree *Deg,unsigned NumDeg)
 		      "</td>",
 	    BgColor,
 	    Gbl.Prefs.IconsURL,
-	    Deg->NumCourses ? "ok_green" :
+	    Deg->NumCrss ? "ok_green" :
 		              "tr",
-	    Deg->NumCourses ? Txt_DEGREE_With_courses :
+	    Deg->NumCrss ? Txt_DEGREE_With_courses :
 			      Txt_DEGREE_Without_courses,
-	    Deg->NumCourses ? Txt_DEGREE_With_courses :
+	    Deg->NumCrss ? Txt_DEGREE_With_courses :
 			      Txt_DEGREE_Without_courses);
 
    /***** Number of degree in this list *****/
@@ -1355,7 +1355,7 @@ static void Deg_ListOneDegreeForSeeing (struct Degree *Deg,unsigned NumDeg)
    fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
 	              "%u"
 	              "</td>",
-	    TxtClassNormal,BgColor,Deg->NumCourses);
+	    TxtClassNormal,BgColor,Deg->NumCrss);
 
    /***** Degree status *****/
    StatusTxt = Deg_GetStatusTxtFromStatusBits (Deg->Status);
@@ -1410,7 +1410,7 @@ static void Deg_ListDegreesForEdition (void)
       /* Put icon to remove degree */
       fprintf (Gbl.F.Out,"<tr>"
 	                 "<td class=\"BM\">");
-      if (Deg->NumCourses ||	// Degree has courses ==> deletion forbidden
+      if (Deg->NumCrss ||	// Degree has courses ==> deletion forbidden
 	  !ICanEdit)
          Lay_PutIconRemovalNotAllowed ();
       else
@@ -1602,7 +1602,7 @@ static void Deg_ListDegreesForEdition (void)
       fprintf (Gbl.F.Out,"<td class=\"DAT RIGHT_MIDDLE\">"
 	                 "%u"
 	                 "</td>",
-               Deg->NumCourses);
+               Deg->NumCrss);
 
       /* Degree status */
       StatusTxt = Deg_GetStatusTxtFromStatusBits (Deg->Status);
@@ -2693,7 +2693,7 @@ void Deg_RemoveDegree (void)
    Deg_GetDataOfDegreeByCod (&Deg);
 
    /***** Check if this degree has courses *****/
-   if (Deg.NumCourses)	// Degree has courses ==> don't remove
+   if (Deg.NumCrss)	// Degree has courses ==> don't remove
       Lay_ShowAlert (Lay_WARNING,Txt_To_remove_a_degree_you_must_first_remove_all_courses_in_the_degree);
    else	// Degree has no courses ==> remove it
      {
@@ -2863,7 +2863,7 @@ bool Deg_GetDataOfDegreeByCod (struct Degree *Deg)
       Deg->FirstYear = 0;
       Deg->LastYear = 0;
       Deg->WWW[0] = '\0';
-      Deg->NumCourses = 0;
+      Deg->NumCrss = 0;
       Deg->LstCrss = NULL;
       return false;
      }
@@ -2895,7 +2895,7 @@ bool Deg_GetDataOfDegreeByCod (struct Degree *Deg)
       Deg->FirstYear = 0;
       Deg->LastYear = 0;
       Deg->WWW[0] = '\0';
-      Deg->NumCourses = 0;
+      Deg->NumCrss = 0;
       Deg->LstCrss = NULL;
       return false;
      }
@@ -2947,7 +2947,7 @@ static void Deg_GetDataOfDegreeFromRow (struct Degree *Deg,MYSQL_ROW row)
    strcpy (Deg->WWW,row[9]);
 
    /***** Get number of courses *****/
-   Deg->NumCourses = Crs_GetNumCrssInDeg (Deg->DegCod);
+   Deg->NumCrss = Crs_GetNumCrssInDeg (Deg->DegCod);
   }
 
 /*****************************************************************************/
diff --git a/swad_degree.h b/swad_degree.h
index e9a5b2928..c6b47cdd3 100644
--- a/swad_degree.h
+++ b/swad_degree.h
@@ -79,7 +79,7 @@ struct Degree
    unsigned FirstYear;
    unsigned LastYear;
    char WWW[Cns_MAX_LENGTH_WWW+1];
-   unsigned NumCourses;					// Number of courses in the degree
+   unsigned NumCrss;					// Number of courses in the degree
    struct Course *LstCrss;				// List of courses in this degree
   };
 struct DegreeType
diff --git a/swad_global.c b/swad_global.c
index 9e39a4c6b..1b72f3eed 100644
--- a/swad_global.c
+++ b/swad_global.c
@@ -244,7 +244,6 @@ void Gbl_InitializeGlobals (void)
    Gbl.Inss.EditingIns.ShortName[0] = '\0';
    Gbl.Inss.EditingIns.FullName[0] = '\0';
    Gbl.Inss.EditingIns.WWW[0] = '\0';
-   // Gbl.Inss.EditingIns.NumStds = Gbl.Inss.EditingIns.NumTchs = Gbl.Inss.EditingIns.NumUsrs =
    Gbl.Inss.EditingIns.NumCtrs = Gbl.Inss.EditingIns.NumDpts = Gbl.Inss.EditingIns.NumDegs = 0;
    Gbl.Inss.EditingIns.NumUsrs = 0;
 
@@ -310,7 +309,7 @@ void Gbl_InitializeGlobals (void)
    Gbl.Degs.EditingDeg.FirstYear    =
    Gbl.Degs.EditingDeg.LastYear     = 0;
    Gbl.Degs.EditingDeg.WWW[0]       = '\0';
-   Gbl.Degs.EditingDeg.NumCourses   = 0;
+   Gbl.Degs.EditingDeg.NumCrss      = 0;
    Gbl.Degs.EditingDeg.LstCrss      = NULL;
 
    Gbl.Degs.EditingCrs.CrsCod       = -1L;
diff --git a/swad_institution.c b/swad_institution.c
index f6218362f..d11bb4c8a 100644
--- a/swad_institution.c
+++ b/swad_institution.c
@@ -638,22 +638,6 @@ static void Ins_ListOneInstitutionForSeeing (struct Institution *Ins,unsigned Nu
 	              "</td>",
 	    TxtClassNormal,BgColor,Ins->NumDpts);
 
-   /* Number of teachers in courses of this institution */
-   /*
-   fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
-	              "%u"
-	              "</td>",
-	    TxtClassNormal,BgColor,Ins->NumTchs);
-   */
-
-   /* Number of students in courses of this institution */
-   /*
-   fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
-	              "%u"
-	              "</td>",
-	    TxtClassNormal,BgColor,Ins->NumStds);
-   */
-
    /* Number of users in courses of this institution */
    fprintf (Gbl.F.Out,"<td class=\"%s RIGHT_MIDDLE %s\">"
 	              "%u"
@@ -897,7 +881,6 @@ void Ins_GetListInstitutions (long CtyCod,Ins_GetExtraData_t GetExtraData)
                Ins->NumUsrsWhoClaimToBelongToIns = 0;
                Ins->NumCtrs = Ins->NumDegs = Ins->NumCrss = Ins->NumDpts = 0;
                Ins->NumUsrs = 0;
-               // Ins->NumUsrs = Ins->NumTchs = Ins->NumStds = 0;
                break;
             case Ins_GET_EXTRA_DATA:
                /* Get number of users who claim to belong to this institution (row[7]) */
@@ -917,9 +900,7 @@ void Ins_GetListInstitutions (long CtyCod,Ins_GetExtraData_t GetExtraData)
                Ins->NumDpts = Dpt_GetNumberOfDepartmentsInInstitution (Ins->InsCod);
 
                /* Get number of users in courses */
-	       Ins->NumUsrs = Usr_GetNumUsrsInCrssOfIns (Rol_UNKNOWN,Ins->InsCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	       // Ins->NumTchs = Usr_GetNumUsrsInCrssOfIns (Rol_TEACHER,Ins->InsCod);
-	       // Ins->NumStds = Usr_GetNumUsrsInCrssOfIns (Rol_STUDENT,Ins->InsCod);
+	       Ins->NumUsrs = Usr_GetNumUsrsInCrssOfIns (Rol_UNKNOWN,Ins->InsCod);	// Here Rol_UNKNOWN means "all users"
                break;
            }
         }
@@ -948,11 +929,11 @@ bool Ins_GetDataOfInstitutionByCod (struct Institution *Ins,
    Ins->Status = (Ins_Status_t) 0;
    Ins->RequesterUsrCod = -1L;
    Ins->ShortName[0] =
-   Ins->FullName[0]  =
-   Ins->WWW[0]       = '\0';
-   // Ins->NumStds = Ins->NumTchs = Ins->NumUsrs =
-   Ins->NumUsrs =
-   Ins->NumCtrs = Ins->NumDpts = Ins->NumDegs = 0;
+   Ins->FullName[0] =
+   Ins->WWW[0] = '\0';
+   Ins->NumUsrsWhoClaimToBelongToIns = 0;
+   Ins->NumCtrs = Ins->NumDegs = Ins->NumCrss = Ins->NumDpts = 0;
+   Ins->NumUsrs = 0;
 
    /***** Check if institution code is correct *****/
    if (Ins->InsCod <= 0)
@@ -1005,9 +986,7 @@ bool Ins_GetDataOfInstitutionByCod (struct Institution *Ins,
 	 Ins->NumDegs = Deg_GetNumDegsInIns (Ins->InsCod);
 
 	 /* Get number of users in courses of this institution */
-	 Ins->NumUsrs = Usr_GetNumUsrsInCrssOfIns (Rol_UNKNOWN,Ins->InsCod);	// Here Rol_UNKNOWN means "all users", NumUsrs <= NumStds + NumTchs
-	 // Ins->NumStds = Usr_GetNumUsrsInCrssOfIns (Rol_STUDENT,Ins->InsCod);
-	 // Ins->NumTchs = Usr_GetNumUsrsInCrssOfIns (Rol_TEACHER,Ins->InsCod);
+	 Ins->NumUsrs = Usr_GetNumUsrsInCrssOfIns (Rol_UNKNOWN,Ins->InsCod);	// Here Rol_UNKNOWN means "all users"
 	}
      }
    else
diff --git a/swad_institution.h b/swad_institution.h
index 670619718..b79cf26e3 100644
--- a/swad_institution.h
+++ b/swad_institution.h
@@ -70,8 +70,6 @@ struct Institution
    unsigned NumCrss;
    unsigned NumDpts;
    unsigned NumUsrs;		// Number of users in courses of this institution
-   // unsigned NumTchs;		// Number of teachers in courses of this institution
-   // unsigned NumStds;		// Number of students in courses of this institution
   };
 
 typedef enum