Exiting from menus

src/freedombone-controlpanel

     sel=$?
     case $sel in
         0) SELECTED_USERNAME=$(cat $data | awk -F '/' '{print $3}');;
-        1) exit 1;;
-        255) exit 1;;
+        1) return;;
+        255) return;;
     esac
     if [ ${#SELECTED_USERNAME} -lt 2 ]; then
         SELECTED_USERNAME=
                7 "Back to main menu" on 2> $data
         sel=$?
         case $sel in
-            1) exit 1;;
-            255) exit 1;;
+            1) break;;
+            255) break;;
         esac
         case $(cat $data) in
             1) backup_data;;
                5 "Back to main menu" on 2> $data
         sel=$?
         case $sel in
-            1) exit 1;;
-            255) exit 1;;
+            1) break;;
+            255) break;;
         esac
         case $(cat $data) in
             1) add_to_mailing_list;;
                5 "Back to main menu" on 2> $data
         sel=$?
         case $sel in
-            1) exit 1;;
-            255) exit 1;;
+            1) break;;
+            255) break;;
         esac
         case $(cat $data) in
             1) add_user;;