RTV Drawing Manager works by using an external SQL database which holds all the sheet, revision, transmittal & contact data - this is then synchronised with the Revit file to generate actual revision notes on the sheets.
We have written a comprehensive series of help files for inhouse use. These are now available to anyone who is interested in using RTV Drawing Manager - they are hosted on the RUGSyd website (Revit User Group Sydney) at:
Revit TV Help Files v2011
These help files were written for Revit v2011, so they don't show all the latest features, but should give you a pretty good idea of its capability:
|Edit Multiple Sheets - allows you to add revisions to multiple drawings by several methods, including auto-incrementing each revision, when they may be different|