This wiki installation is running version pmwiki-2.3.12, version number 2003012.
Obtaining the PmWiki version
See the SiteAdmin.Status page for the current version and version number.
Obtaining recipe versions
The Site Analyzer can be used to display the current version of Cookbook recipes. If you are the administrator, cookbook recipe guidelines recommends that the first couple of lines of a recipe file should contain the recipe version:
$RecipeInfo['RecipeName']['Version'] = '2017-06-02'; # dates YYYY-MM-DD prefered