Hi There was a talk at our last svfig ( Silicon Valley Forth Interest Group ) about how to find the interesting integer ratios ( like 355/113 ). Although, one can simply try all kinds of numbers ( quite quick on todays processors ), there are algorithms based on number theory that are faster. I wish I was paying more attention so I could pass on what was done. The talk was based on creating speciallized languages to handle these interesting problems of LSD's ( Least Common Denominator ). The fellow that gave the talk was named LaFarr. Forth is especially adapt at creating application oriented languages. I fact that is the way one normally programs in Forth, once they know what they are doing. Dwight