Thanks again so much Link.
In the olden days, we used to use a purple non-print pencil directly on the velum originals. Then with the advent of CAD, we would plot up a check set & use a red pen. I thought I would see if the Mark-Up tool would be an improvement to the tried & tested methods of the past. Based on my initial use, that would be a big NO. Hopefully GS can get it worked out because it seems on the surface to be a good idea.
AC25 v. 5005 w/ MEP, Cadimage, Twinmotion 2021 using AC from AC6.0, 2.7 GHz 12-Core Intel Xeon E5 (OS X 12.2.1 Monterey), AMD FirePro D700 6GB, SSD, Artlantis 2019, Adobe CC. Used AC on both platforms.