Okay.  Here's how to set up a selection box for a comparison.

Select both actors in the listboxes.  Then click on the "Screen regions" button.  A menu will pop up, as shown above.  Select "Create region screening box".  You may need to click it a few times to get it to respond.  My popup menus aren't handling as well as I'd like.

Continued in the next post....

===========================sigline======================================================

Cage can be an opinionated jerk who posts without thinking.  He apologizes for this.  He's honestly not trying to be a turkeyhead.

Cage had some freebies, compatible with Poser 11 and below.  His Python scripts were saved at archive.org, along with the rest of the Morphography site, where they were hosted.