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.
Below each box is a "Restore" link. Clicking the link will open an edit box with the page as it was before that edit. You can make changes or simply click Save to restore the text.
There are two additional options specific to PageHistory:
In the default mode "Show changes to markup", you can disable word-level highlighting of differences by adding to config.php such a line:
A page's history is kept for the number of days given by the
Note that a specific page revision isn't removed from the page until the first edit after the time specified by
1. Administrators can clean page histories using the Cookbook:ExpireDiff recipe.
2. Administrators with FTP file access can download individual pages from the wiki.d directory, open them in a text editor, manually remove history, and re-upload the files to wiki.d/ directory. Care must be exercised, when manually editing a page file, to preserve the minimum required elements of the page and avoid corrupting its contents. See PageFileFormat#creating.
3. Edit the page. Select all the contents of the edit text area and cut them to the clipboard. Enter
In the local/config.php file, set
In case of this restriction is set up on a farm, and you want to allow it on a particular wiki, set in your local/config.php :