diff --git a/swad_announcement.c b/swad_announcement.c
index 12d1995f0..1aee842ad 100644
--- a/swad_announcement.c
+++ b/swad_announcement.c
@@ -75,6 +75,7 @@ static void Ann_CreateAnnouncement (unsigned Roles,const char *Subject,const cha
 
 void Ann_ShowAllAnnouncements (void)
   {
+   extern const char *Hlp_MESSAGES_Announcements;
    extern const char *Txt_Announcements;
    extern const char *Txt_No_announcements;
    char Query[256];
@@ -117,7 +118,7 @@ void Ann_ShowAllAnnouncements (void)
    Lay_StartRoundFrame ("550px",Txt_Announcements,
                         ICanEdit ? Ann_PutIconToAddNewAnnouncement :
 				   NULL,
-		        NULL);
+		        Hlp_MESSAGES_Announcements);
 
    if (!NumAnnouncements)
       Lay_ShowAlert (Lay_INFO,Txt_No_announcements);
@@ -431,6 +432,7 @@ static long Ann_GetParamAnnCod (void)
 
 void Ann_ShowFormAnnouncement (void)
   {
+   extern const char *Hlp_MESSAGES_Announcements;
    extern const char *The_ClassForm[The_NUM_THEMES];
    extern const char *Txt_New_announcement;
    extern const char *Txt_MSG_Subject;
@@ -442,7 +444,8 @@ void Ann_ShowFormAnnouncement (void)
    Act_FormStart (ActRcvAnn);
 
    /***** Start frame *****/
-   Lay_StartRoundFrameTable (NULL,Txt_New_announcement,NULL,NULL,2);
+   Lay_StartRoundFrameTable (NULL,Txt_New_announcement,
+                             NULL,Hlp_MESSAGES_Announcements,2);
 
    /***** Message subject and body *****/
    fprintf (Gbl.F.Out,"<tr>"
diff --git a/swad_changelog.h b/swad_changelog.h
index 84f5acb59..c9b13a159 100644
--- a/swad_changelog.h
+++ b/swad_changelog.h
@@ -178,13 +178,15 @@
 /****************************** Public constants *****************************/
 /*****************************************************************************/
 
-#define Log_PLATFORM_VERSION	"SWAD 16.71.7 (2016-11-26)"
+#define Log_PLATFORM_VERSION	"SWAD 16.71.8 (2016-11-26)"
 #define CSS_FILE		"swad16.69.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 16.71.8:  Nov 26, 2016	Contextual help on email to students.
+					Contextual help on global announcements. (207634 lines)
         Version 16.71.7:  Nov 26, 2016	Code refactoring in timetable. (207626 lines)
         Version 16.71.6:  Nov 26, 2016	Selector "Only my groups"/"All groups" only of the course has groups.
 					Code refactoring in timetable. (207619 lines)
diff --git a/swad_help.c b/swad_help.c
index 66c7bfde1..07fd315ae 100644
--- a/swad_help.c
+++ b/swad_help.c
@@ -132,6 +132,8 @@ const char *Hlp_SOCIAL_Forums = WIKI "SOCIAL.Forums";
 
 const char *Hlp_MESSAGES_Notifications = WIKI "MESSAGES.Notifications";
 
+const char *Hlp_MESSAGES_Announcements = WIKI "MESSAGES.Announcements";
+
 const char *Hlp_MESSAGES_Notices = WIKI "MESSAGES.Notices";
 
 const char *Hlp_MESSAGES_Write           = WIKI "MESSAGES.Write";
@@ -140,6 +142,8 @@ const char *Hlp_MESSAGES_Received_filter = WIKI "MESSAGES.Received#filter";
 const char *Hlp_MESSAGES_Sent            = WIKI "MESSAGES.Sent";
 const char *Hlp_MESSAGES_Sent_filter     = WIKI "MESSAGES.Sent#filter";
 
+const char *Hlp_MESSAGES_Email = WIKI "MESSAGES.Email";
+
 /***** STATS tab *****/
 
 const char *Hlp_STATS_Surveys             = WIKI "STATS.Surveys";
diff --git a/swad_mail.c b/swad_mail.c
index cde4cd4b4..e5ce9e30f 100644
--- a/swad_mail.c
+++ b/swad_mail.c
@@ -825,6 +825,7 @@ static void Mai_CreateMailDomain (struct Mail *Mai)
 
 void Mai_ListEmails (void)
   {
+   extern const char *Hlp_MESSAGES_Email;
    extern const char *The_ClassFormBold[The_NUM_THEMES];
    extern const char *Txt_Students_who_have_accepted_and_who_have_email;
    extern const char *Txt_X_students_who_have_email;
@@ -846,7 +847,7 @@ void Mai_ListEmails (void)
    /***** Start of the frame used to list the emails *****/
    Lay_StartRoundFrame (NULL,
 			Txt_Students_who_have_accepted_and_who_have_email,
-			NULL,NULL);
+			NULL,Hlp_MESSAGES_Email);
 
    /***** Form to select groups *****/
    Grp_ShowFormToSelectSeveralGroups (ActMaiStd);