diff --git a/swad_changelog.h b/swad_changelog.h
index 1963385e3..0f4096f1d 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -162,17 +162,21 @@
 // TODO: Hay un problema cuando se eliminan usuarios de una asignatura: quedan sus trabajos sin eliminar para siempre, ocupando espacio
 // TODO: Se elimina un único estudiante de la asignatura. ¿Se eliminan sus trabajos? Si no, habría que cambiar el mensaje "eliminando sus trabajos...".
 
+// TODO: Los administradores deberían ver el DNI de los usuarios no confirmados?
+
 /*****************************************************************************/
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.64.3 (2016-11-17)"
+#define Log_PLATFORM_VERSION	"SWAD 16.64.5 (2016-11-17)"
 #define CSS_FILE		"swad16.60.1.css"
 #define JS_FILE			"swad16.46.1.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 16.64.5:  Nov 17, 2016	Input fields required in record card. (207268 lines)
+        Version 16.64.4:  Nov 17, 2016	Contextual help on guests and administrators. (207264 lines)
         Version 16.64.3:  Nov 17, 2016	Contextual help on teachers. (207259 lines)
         Version 16.64.2:  Nov 17, 2016	Code refactoring in record cards. (207253 lines)
         Version 16.64.1:  Nov 17, 2016	Changes in texts related to record cards. (207252 lines)
diff --git a/swad_help.c b/swad_help.c
index 29e87b194..85031302e 100644
--- a/swad_help.c
+++ b/swad_help.c
@@ -101,7 +101,8 @@ const char *Hlp_USERS_Teachers                    = WIKI "USERS.Teachers";
 const char *Hlp_USERS_Teachers_shared_record_card = WIKI "USERS.Teachers#shared-record-card";
 const char *Hlp_USERS_Teachers_timetable          = WIKI "USERS.Teachers#timetable";
 
-const char *Hlp_USERS_Others_guests = WIKI "USERS.Others#guests";
+const char *Hlp_USERS_Others_administrators = WIKI "USERS.Others#administrators";
+const char *Hlp_USERS_Others_guests         = WIKI "USERS.Others#guests";
 
 const char *Hlp_USERS_Attendance = WIKI "USERS.Attendance";
 
diff --git a/swad_record.c b/swad_record.c
index 48d876cd4..620efa688 100644
--- a/swad_record.c
+++ b/swad_record.c
@@ -2021,6 +2021,7 @@ void Rec_ShowSharedUsrRecord (Rec_SharedRecordViewType_t TypeOfView,
   {
    extern struct Act_Actions Act_Actions[Act_NUM_ACTIONS];
    extern const char *Hlp_PROFILE_Record;
+   extern const char *Hlp_USERS_Others_guests;
    extern const char *Hlp_USERS_Students_shared_record_card;
    extern const char *Hlp_USERS_Teachers_shared_record_card;
    extern const char *The_ClassForm[The_NUM_THEMES];
@@ -2045,7 +2046,7 @@ void Rec_ShowSharedUsrRecord (Rec_SharedRecordViewType_t TypeOfView,
    const char *Rec_RecordListHelp[Rol_NUM_ROLES] =
      {
       NULL,					// Rol_UNKNOWN
-      NULL,					// Rol__GUEST_
+      Hlp_USERS_Others_guests,			// Rol__GUEST_
       NULL,					// Rol_VISITOR
       Hlp_USERS_Students_shared_record_card,	// Rol_STUDENT
       Hlp_USERS_Teachers_shared_record_card,	// Rol_TEACHER
@@ -2826,7 +2827,7 @@ static void Rec_ShowRole (struct UsrData *UsrDat,
 	 fprintf (Gbl.F.Out,"<input type=\"radio\" name=\"Sex\" value=\"%u\"",(unsigned) Sex);
 	 if (Sex == Gbl.Usrs.Me.UsrDat.Sex)
 	    fprintf (Gbl.F.Out," checked=\"checked\"");
-	 fprintf (Gbl.F.Out," />"
+	 fprintf (Gbl.F.Out," required=\"required\" />"
 			    "<img src=\"%s/%s16x16.gif\""
 			    " alt=\"%s\" title=\"%s\""
 			    " class=\"ICO20x20\" />"
@@ -2877,7 +2878,8 @@ static void Rec_ShowSurname1 (struct UsrData *UsrDat,
    if (DataForm)
       fprintf (Gbl.F.Out,"<input type=\"text\" name=\"Surname1\""
 			 " maxlength=\"%u\" value=\"%s\""
-			 " class=\"REC_C2_BOT_INPUT\" />",
+			 " class=\"REC_C2_BOT_INPUT\""
+                         " required=\"required\" />",
 	       Usr_MAX_LENGTH_USR_NAME_OR_SURNAME,
 	       UsrDat->Surname1);
    else if (UsrDat->Surname1[0])
@@ -2937,8 +2939,9 @@ static void Rec_ShowFirstName (struct UsrData *UsrDat,
 		      " class=\"REC_C2_BOT REC_DAT_BOLD LEFT_MIDDLE\">");
    if (DataForm)
       fprintf (Gbl.F.Out,"<input type=\"text\" name=\"FirstName\""
-			 " maxlength=\"%u\" value=\"%s\""
-			 " class=\"REC_C2_BOT_INPUT\" />",
+                         " maxlength=\"%u\" value=\"%s\""
+			 " class=\"REC_C2_BOT_INPUT\""
+                         " required=\"required\" />",
 	       Usr_MAX_LENGTH_USR_NAME_OR_SURNAME,
 	       UsrDat->FirstName);
    else if (UsrDat->FirstName[0])
@@ -2977,8 +2980,9 @@ static void Rec_ShowCountry (struct UsrData *UsrDat,
 		      " class=\"REC_C2_BOT REC_DAT_BOLD LEFT_MIDDLE\">");
 
    /***** Selector of country *****/
-   fprintf (Gbl.F.Out,"<select name=\"OthCtyCod\" class=\"REC_C2_BOT_INPUT\">"
-		      "<option value=\"-1\">%s</option>"
+   fprintf (Gbl.F.Out,"<select name=\"OthCtyCod\" class=\"REC_C2_BOT_INPUT\""
+	              " required=\"required\">"
+		      "<option value=\"\">%s</option>"
 		      "<option value=\"0\"",
 	    Txt_Country);
    if (UsrDat->CtyCod == 0)
diff --git a/swad_user.c b/swad_user.c
index a6974bf3f..0e779bf35 100644
--- a/swad_user.c
+++ b/swad_user.c
@@ -6208,6 +6208,7 @@ unsigned Usr_ListUsrsFound (Rol_Role_t Role,const char *SearchQuery)
 
 void Usr_ListDataAdms (void)
   {
+   extern const char *Hlp_USERS_Others_administrators;
    extern const char *The_ClassForm[The_NUM_THEMES];
    extern const char *Txt_ROLES_PLURAL_Abc[Rol_NUM_ROLES][Usr_NUM_SEXS];
    extern const char *Txt_Scope;
@@ -6277,7 +6278,7 @@ void Usr_ListDataAdms (void)
 
    /***** Start frame with list of administrators *****/
    Lay_StartRoundFrame (NULL,Txt_ROLES_PLURAL_Abc[Rol_DEG_ADM][Usr_SEX_UNKNOWN],
-                        NULL,NULL);
+                        NULL,Hlp_USERS_Others_administrators);
 
    /***** Form to select range of administrators *****/
    fprintf (Gbl.F.Out,"<div class=\"CENTER_MIDDLE\">"