I'm working on a Dash docset for Nimrod's documentation. You can download a preview from http://dl.dropbox.com/u/145894/t/Nimrod.docset.zip and install it locally. Then you can search all the procs, variables, etc, instantly. Here's a screenshot looking for split(: http://imgur.com/EZ20EXw
At the moment some searches are slow because if you happen to find a keyword for a module like windows which is extremely long, the rendering of the html seems to lock up the dash UI. It also doesn't make much sense to search that module since its docstrings are empty and you are using Dash on macosx, so I plan to add a blacklist filter.
Eventually this would make it to Nimrod's koch or a separate small tool on github anybody could download. Any comments welcome.