Name of front-end

[Robert Dewar]

Richard Kenner wrote:

>     FWIW, some IBM 360 PL/1 manuals I just looked at do not mark or claim
>     "PL/1" as trademark.  
> 
> But certainly some did.  And contemporary lore was that they trademarked PL/2,
> PL/3, etc ...

Hmm, Richard, what is your authority/reference for this? I can find no 
evidence that PL/I was trademarked. I very much doubt that PL/1 is 
trademarked since IBM always uses PL/I (letter I), not PL/1 (digit 1) in 
their product literature

As for PL/2 etc, that's surely bogus, since such names were never used
in commerce (a requirement for trademarking something!)

If you google on PL/I you will find zillions of references from third
parties with no hint of a trademark, so I think you can safetly talk
about GNU PL/1 without worrying!