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In mtt01.ps, section 2.2, page 3, should "A has type K"
be "A has kind K"?

Hey, neat. It's relatively easy to hack the
Twelf source to add extra special symbols to
translate for Twelf.Print.TeX.sgn();
Maybe I should hack in some sort of
%tex directive to allow such things without
bashing at the source every time.
Something like
%tex \input mymacros.tex
for raw TeX stuff and and
%texsym <= $\Leftarrow$
for translating tokens into nice TeX.