If enabled (see
HelpOnConfiguration), you can delete pages with the
DeletePage action. Note that deleting means to make a backup copy of the page, and then deleting the page file. This is almost like saving an empty page.
What this means is that you can get back at deleted pages by using the standard mechanisms. If you enter the page name into the
GoTo dialog form, you'll see the usual page creation stuff, but clicking on
PageInfo will reveal the old version history, unless the page was purged by
WikiMaster out of existence inbetween.