Where's the (c) on unix?

[Karl Berry]

   Although you didn't mention it, I am almost sure that the language
compilers are copyrighted, or at least proprietary. ( What's the
difference? ) And I am closer to sure that `pc' and related
programs are. 
   ( We recently got a TeX tape here, and while reading through
some of the files, as well as some of the old TeX newsletters, it
appears that the whole tape can't be sent to Unix sites with only a
binary license, because the tape includes a complete Pascal compiler.
Thus, it would appear to be protected. )

karl at dartmouth          or        {cornell,decvax,linus}!dartvax!karl