I have been using this program for 3 months now - mainly to import and edit my numerous ClarisWorks(DR) diagrams. As I move up the learning curve, I am more and more impressed with its power and usability. I have used and tried many drawing and CAD programs over the years (alas, my Freehand skills are now wasted) and I have found this to be one of the most Mac friendly. I just had a response from the developer within 2 hours - that's service!