Manual:PurgePage.php

Details
purgePage.php file is a maint-scripts>Special:MyLanguage/Manual:Maintenance scripts|maintenance script to send purge requests for listed pages to squid>Special:MyLanguage/Manual:Squid caching|squids.

It's supposed to purge specific files and their old versions ()

Syntax
Give a list of page titles to purge, one per line, from standard input:

Give a list of page titles to purge, one per line, from a file:

where   contains a list of pagenames to be regenerated.