It is always possible to add comments or attach files on all types of documents, on any status.
To add a new comment, just enter on the text area and press Add. The comment will be visible to all the users who can access the document.
To remove a comment, you just have to select the comment and press Remove. Only the last visible comment on the list may be removed and only by its author.
In a similar way, to add or remove attachments, just select the attachments tab, and proceed accordingly.
Like the comments, any uploaded files will be available to anyone who can access the document.
