Roger: > (0&, + ,&0)^:(i.10) 1 Viktor: > Variation: > 0 (, + ,~)^:(i.10) 1 Further variation: (<10) 0&(, + ,~) 1 And hey, Ian, here's an example of where the constant verbs are still useful, despite the introduction of the NVV train: bc =: < 0&(, + ,~) 1: NB. Try bc 10 . Note that without 1: I would've had to write 1"_ (which is less tasteful). -Dan