Hi! Fold verb is very useful for work with concatinating verbs.
Current I using this sentense: sOutStr =. '' (] , getStrFromTransOut@[) F.. ] aVOut One symbol longer: sOutStr =. '' (getStrFromTransOut@[ ,~ ]) F.. ] aVOut Ideal option (solution) with another argument order: sOutStr =. '' ([ , getStrFromTransOut@]) F.. ] aVOut Left [ and right ] brackets in their places and no need using ~ with comma verb. Sergey. ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm