This one has been around for a long time but still very useful. Emc2 Architects have produced this standalone application which makes it MUCH easier to edit and manage your keynote text file. I'm surprised Autodesk havent added something like this into the product yet? or mabe they have and I have just missed it!
Keynoting is something which is becoming more and more popular, and with the recent release of the new NBS specwriter which allows export of clause headers, it is even more useful for the UK market.
The Keynote Editor can be downloaded from Emc2 website here:
Or download it direct from here: http://www.emc2architects.com/revit_tools.html