Thanks Vivian I appreciate your time to answer this dumb question. Must have been tired (or LAZY) when I first looked at it. After I left this message, I explored more - and yes - all the information was there (help & PDF manual - which I think are the same). I used to teach programming (but am not super at math :( - prefer art!) so even the - well I'm not sure what they call it in UF - but the script for development looked familiar. At any rate I saw enough and explored enough (including a lot of sites) to make an easy decision to purchase. SO I DID! I KNEW there had to be more to it. I'm a software junkie but have enjoyed fractals since the first I saw - maybe back in the 80's. There are a lot of free things out there such as Apophysis and others. I very recently bought XenoDreams also but I don't think it gives you the control to write your own formulas exactly like UF but it will create 3D objects to put into my myriad of 3D programs (Lightwave, Cinema 4D, Rhinoceros, Bryce, Vue, Poser, etc. - told you I was a software junkie). The learning curve won't be too bad after learning 3d applications. So thanks again for your reply. hope I can contribute here as well (In time!) Jim