OptInt PmWiki . Pm Wiki / . Edit Page | Page History | ... MROI Delay Line Design Contract . ... When PmWiki is called with '?action=diff', it displays a summary of past edits on a page. Each past edit is shown in a box which shows lines added, changed or deleted during that edit in a before & after format. ... Clicking the link will open an edit box with the page as it was before that edit. ... How can I restrict viewing the page history (?action=diff) to people with edit permission? ...