A handler specific parameter string. For example, pdfs might use "page15-100px". $1urlwidth must be used and be consistent with $1urlparam.
MediaWiki:Apihelp-query+imageinfo-param-urlparam
From Philosophy of Biology Graduate Programs
A handler specific parameter string. For example, pdfs might use "page15-100px". $1urlwidth must be used and be consistent with $1urlparam.
