Edit: Yes, I know, I provided an answer to this question myself. However, I'm still interested in other solutions and/or comments on the one I found. Is this how you would do this? Are there any other ways?
I would like to provide some additional description and on-page help (i.e., no contextual help or help tabs) on the overview page (i.e.,
edit.php) for a custom post type.
edit.php (as well as
class-wp-posts-list-table.php) there is no appropriate hook.
So, how can I do this?
A few notes:
- I came up with a solution, which I would describe a bit hackish, so I'm open for a clean solution (if there is one);
- I will post my solution as an answer so you can comment on that (and so the question and answer are kept separate);