ewww.... will be following this. The only book I've had explaining Bryce to me is the User manual. Now.. English is my second language, - and I thought I mastered it pretty well, - but I never got those pages... and the DTE left me (or would that be I left the DTE)... totally confused! Ack. I have come to understand that what Ornlu says is at least partially true. If it ain't transparent, it hasn't got any refraction. Refraction is (if I've finally gotten this part of DTE), the angle the light beams break through a transparent material. Now... Mirrors; they're not transparent... but they do cast lightbeams BACK... that would be reflection... Right? But.. what if the mirror is damp; those lightbeams would refract through the waterdrops on the mirror, and be reflected in a different angle than they were destined for... Did I understand this correctly? :)