Board Thread:Bloons Wiki and BTD News/@comment-4795804-20121210135220/@comment-3153244-20130224120654

Spike144 wrote: It looks interesting. Is there any documentation how it works? Sure. w:c:avatar:Template:Icons/doc just shows that it is necessary for a minor addition to MediaWiki:Common.js to move the icons to the top right hand side (RHS) of page instead of top LHS.

If you analyse w:c:avatar:Template:Icons and w:c:avatar:Template:Icons/SubIcon properly (view source), you can see that Template:Icons provides the parameters while /SubIcon provides the images.