yacc: public domain?

[David Sherman]

The questions of the /usr/include files is an interesting one. Many
of them are included in the UNIX Version 7 manual (actually included
by a .so instruction to nroff) in sections 2, 3 and 5 (e.g., stat(2)
includes /usr/include/sys/stat.h). Now, as has been pointed out, the
manual is protected by copyright rather than trade secret. If indeed trade
secret cannot exist after publication, then these files can hardly
be said to be protected by trade secret any more.

Dave Sherman
The Law Society of Upper Canada
Toronto
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