Having trouble finding this in the wiki: I know that we can select from a table using a boxed pair
A 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (<1 3){A 8 How do I write a verb f to do the reverse, so that 8 f A yields the result 1 3 ? Thanks, David -- David Pinchbeck Associate Professor of Mathematics St. Joseph's College Standish, ME ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm