List all the authors of the site, with several options available.
Displays an HTML link to the author page of the current post’s author.
Retrieve all options as it was for 1.2.
Prints the form in the Custom Fields meta box.
Outputs a post’s public meta data in the Custom Fields meta box.
Update post meta data by meta ID.
Get meta data for the given post ID.
Get a list of previously defined keys.
Delete post meta data by meta ID.
Add post meta data defined in $_POST superglobal for post with given ID.
This was once used to create a thumbnail from an Image given a maximum side size.
Legacy function used for generating a categories drop-down control.
This action is documented in wp-admin/admin-footer.php