default distribution 'default', then exits.
@item -p
-@itemx --process <src> <dst>
-process Makefile.ad file <src> into <dst> for distribution, the exits.
+@itemx --process <type> <src> <dst>
+Process file <src> into <dst> for distribution, <type> is 'makefile',
+'configure', 'non-source' or 'source' and defines the type of <src>,
+then exits.
@item -m
@itemx --makedist