map -package:containers -package:bytestring -package:conduit -package:invertible is:exact -package:psqueues -package:integration -package:filepath -package:foldl -package:hedgehog -package:pipes package:blaze-html

Combinator for the <map> element. Example:
map $ span $ toHtml "foo"
Result:
<map><span>foo</span></map>