Well, I got a response from CardonWare and wanted to share it in case anyone else was confused.

Part of the response:

With version 1.5, which we released on 7/3/02, one of the changes we made was to replace macros with additional device/activity screens for a variety of reasons. Many users requested the additional device/activity screens (now 25 per location vs. 10), so that they could create screens with all of the buttons needed for a given activity (i.e. watching a movie) and still have a separate screen at the same location dedicated to each piece of equipment.

-Considering how much fun and easy it is to make the skins, that works for me.