The result of the discussion was:
This template is used by administrators upon the closing of a Wikipedia:Files for discussion debate. Once a consensus has been reached, ((subst:ffd top)) should be placed on the line below the heading of the debate, and ((subst:ffd bottom)) (or ((subst:ffd b)) shortcut) should be placed at the end of the debate. The box will signify to others that it has been closed.