Applies to the <form> tag for the default post edit page (Which is used for pages and custom post types). It is at the end of the form start tag and before the closing bracket.
<form name="post" action="post.php" method="post" id="post"<?php do_action('post_edit_form_tag'); ?>>
An example of it's usage would be:
add_action( 'post_edit_form_tag' , 'post_edit_form_tag' );
function post_edit_form_tag( ) {
echo ' enctype="multipart/form-data"';
}
The above example will allow you to add file upload forms.
Return to Plugin API/Filter Reference