Redline stds

[Daniel Say <say>]

  Is there a standard "typewriter" way to show
editing?

  I've got a redline.prn file made up to 'print' to 
a file with inserts and deletions marked when done
with the 'red' redline command  on.

  But is there some protocol?  +word+  -letter- ??

                                        Daniel Say
                                        say