Not to mention the fact that explaining to others really helps getting a ve= ry strong knowledge of the subject explained (if you don't have it already!= ). =20 =20 =20 > It is very good that you speak what you believe you have heard people exp= lain and what you have observed with experimentation. It gives PIClisters a= chance to comment on your grasp of the concepts. There are a lot of people= who like to help when they have a tidbit to offer. >=20 > gus in denver =20 --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .