Functions are documented at [R] functions
and in the on-line help. You don't need [P]. 
Nick 
[email protected] 
Clive Nicholas
> Nick Cox replied:
> 
> > I haven't got any gun in my hand, but
> > I'm not clear that we need this syntax.
> >
> > Are you asking for what can be done by
> >
> > ... if !inlist(_n,10,100,250)
> 
> Thanks, Nick: I should have known this. But, in my defence, I 
> don't yet
> have the Stata Programming Manual. Disgraceful, I know.
> 
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