Hi Bill, This might be bad style (please let me know if it is), but the leading ''; doesn't seem to be required
adv2 =: 1 : (':' ; 'm*y-x') works just as well. Cheers, bob On 2010-12-14, at 4:39 PM, bill lam wrote: > adv2=: 1 : ('';':';'m*y-x') ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm