Where is $1 coming from?

I think I've found it: mediawiki:size-kilobytes, -megabytes, -gigabytes.

Urhixidur (talk)‎14:13, 13 October 2011
Retrieved from "https://translatewiki.net/wiki/Thread:MediaWiki_talk:File-info/Where_is_$1_coming_from%3F/reply#Where_is_$1_coming_from?_17175"