I think I understand that Jan-Pieter has a data noun named in12 which I reproduce here.
in12 =: 0 : 0 start-A start-b A-c A-b b-d A-end b-end ) Then that line of code, but ending in in12 instead of in 12, works. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
