to quote from the web site:-)
Features
Generally spoken pro motion is a "pixel pusher" that is working like the famous drawing packages Deluxe Paint or Brilliance published in the past for Commodore Amiga systems.
All tools are optimized for image and animation editing at pixel level for graphics with up to 256 palettized colors per frame.
:-)
I think Jan is an ex Amiga user that's why its very Dpaint like ( well version 5 not used version 6 )