| 1 handlers.inc | views_handler::has_extra_options() | 
If a handler has 'extra options' it will get a little settings widget and another form called extra_options.
File
- core/modules/ views/ includes/ handlers.inc, line 358 
- Defines the various handler objects to help build and display views.
Class
- views_handler
- Base handler, from which all the other handlers are derived. It creates a common interface to create consistency amongst handlers and data.
Code
function has_extra_options() {
  return FALSE;
}
