I typically have been using Note blocks for Keynotes. Plan keynotes have circles, and demo notes are pentagons, etc. Is there a way to get the circle, pentagon, etc. to show up on the header of the Note Block, so as to indicate what type of note it is.
I know that this could be done with Drafting lines, but I have a feeling that Revit is better than that.
If not, then this is a National CAD Standard thing, and in my opinion, while each office has their own standards, many offices are moving toward this standard, and every effort should be made for Revit drawings to easily meet the NCS guidelines.