* automake.texi: Use `variable' instead of `macro' everywhere it designates a Makefile variable. (Texinfo): `VERSION', `UPDATED', `EDITION', and `UPDATED-MONTH' are `flags', not `macros'. `Macro' means something else in Texinfo. Also show how to use these flags. * automake.in (file_contents_internal): s/macro/variable/ in error message.