Peter Phelan wrote: [... quid ? ...] I answered: > Yes: char/0 is a built-in type, not char/1. And then Fergus Andrew Bromage wrote: [...] > As Fergus said, except that char/1 isn't declared in the library, but > char/0 is. [...] And half an hour after, my message arrived ! That's not fair, I stop playing. :-) -- R1.