The term "reptile" in mathematics refers to a tile which "repeats" or "replicates", thus rep+tile. It can be broken down into smaller copies inside itself infinitely many times. There are some interesting reptiles which are less regular than the ones I've mentioned, one of which is included in the fractint.l file which comes with Fractint - sphinx. I've counted the number of examples I included in Part II of my recent posting. There are 94 of them. I hope that's not too many for people to check out - it was hard to narrow down to this few from the thousands of tiles I've found! This I intend to be the main file of samples - I'm not going to make it any shorter. Feel free, everyone, to pick and choose from this set if 94 are too many. Tony Hanmer _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail