Hello, I have tried searching for this, but haven't had any luck yet.
Basically, I want to add another TinyMCE html text area to the write a post page (through a plugin, but how?). The reason is so that a writer can add a custom sidebar to a post with html content inside of it.
I currently can do this with a custom field, and pasting the html content into that, but I'd like to be able to add to it via the WYSIWYG editor.
This is not to be confused with the "wordpress sidebar" in sidebar.php.
It will be a custom field associated with the post.
Hope that makes sense. Any help would be appreciated.