U luatex/src/texk/web2c/luatexdir/luatex.web U luatex/src/texk/web2c/luatexdir/lua/lcallbacklib.c U luatex/src/texk/web2c/luatexdir/luatex-api.h U luatex/src/texk/web2c/lib/texmfmp.c U luatex/manual/luatexref-t.tex U luatex/manual/luatexref-t.pdf Checked out revision 193.