https://www.techsmith.com/download/snagit/ is a great solution for that,
however, in ArchiCAD you can just use the marquee tool to surround the area in the 3D window you want to mark up --Copy (Ctrl-C if you like), and paste into a plan view, mark it up there, - surround in plan view with the marquee tool again - copy to clip board - and here is the little trick... Insert into Outlook as Screen Shot. You can't just Ctrl-V to get that into your email with Outlook ( if that is what your using)
Apparently, when you copy what's inside the marquee it is understood by Microsoft Word and Outlook as a screen shot and has to be inserted/pasted in the documents that way instead of just as an image. You will get the whole screen unless you use the screen clipping feature which will take you back to the ArchiCAD window where you can surround the image with markups you want to send in the email.
There are many better ways to do this ( try Snagit for free - good for so many things we do) using other programs but if you are just using ArchiCAD and email this is how you can do it with the Microsoft Office products.
real life example -- When seconds count
you will like to be using Snagit.
smart ass engineers response was - tell him all the bolts were torqued to the same German spec - Gutentite - with a pipe wrench.
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