User blog comment:Daniel Baran/Search Developments: Big Picture/@comment-1318845-20120514021946/@comment-1656630-20120514170534

The key line in the TOU here is "prevent the proper display or function" -- which we've defined as having one button, and being consistent between wikis.

On many areas of the wiki, we can be flexible about adding additional buttons, but this tool is pretty critical to our skin, and we need to enforce that rule here.