-| Return Values : E_OK - no error
-| E_BAD_ARGUMENT - invalid form pointer
-| E_POSTED - form is posted
+| Return Values : E_OK - no error
+| E_BAD_ARGUMENT - Invalid form pointer or field array
+| E_CONNECTED - a field is already connected
+| E_POSTED - form is posted
+| E_SYSTEM_ERROR - not enough memory