> I error to the left when aligning on the left side of the > triangle, and to the right on the right side. No, you don't... ;] The left "picture" formed by the numbers 3, 10, 35 and 126 should be a mirror of the right one. It isn't... But I like the idea of "erroring" to opposite sides. What about the center column? gegroet, Erik V. - http://www.erikveen.dds.nl/