Thanks all, On 21 déc, 17:39, Jan-Erik Söderholm <jan-erik.soderh... at telia.com> wrote: > > What is your interpretation of "a number" ? Not mine, DCL's :-) DTL> a=1 DTL> b=f$type(a) DTL> 'b %DCL-W-IVVERB, unrecognized command verb - check validity and spelling \INTEGER\ DTL>