Help:System messages

System Messages 

Systems Messages provide a means for customising the look and feel of a wiki. Because their impact is system wide only admins and above normally have access to them. Others may look, but they may not edit.

Appearance
Monobook.css - The global stylesheet for your wiki. Monobook.js  - ?

File Management
1movedto2 1movedto2_redir

These relate to the renaming of files, which is done by moving a file from one name to another.

From Wikia, a Wikia wiki.