: Well, OK, I agree for the most part *but* there's one important
: distinction that is only recently being worked around:  Chapter 3
: interfaces can mostly be replaced at will with incompatible
: functionality in a program, but Chapter 2 interfaces cannot be replaced
: without jeopardizing the correct functioning of some standard library
: subroutines

Uh, no.  See src/lib/libc/include/namespace.h.

-- 
-- Todd Vierling (Personal tv@pobox.com; Bus. todd_vierling@xn.xerox.com)