I've been developing WP themes for a while not but i just recently started to dive into plugin development and I have a question I can't seem to find in any of the documentation or searching on google (because the terms are too broad).
I've found out how to make a top level menu and add subpages to it. But I can't figure out how to register a function to: admin.php?page=MyPlugin_action and not have that "action" page (whic handles the submission of various medium size form pages) how up in the admin menu.
Can anyone point me in the right direction?
Thanks in advance.