The other aspects I find very useful are: 1) there is a display list so I can see all the editmarks and jump to them. That way, in a proposal for example I can see if there are any residual marks that should be removed. 2) when I make a pdf, they are converted to a list of todo items at the front, and as margin notes. This reminds me that they are there, and is useful for non-org users to see what I need and where.