> Date: Mon, 18 Nov 1996 21:52:13 -0500
> From: "Gary D. Duzan" <gary@wheel.tiac.net>
> 
>    It seems that keywords.sh has changed recently, which requires
> that it be run to generate keywords.[ch]. This seems a natural
> thing to handle in the Makefile, but it is commented out:
> 
> # keywords.c keywords.h : keywords.sh
> #       sh keywords.sh
> 
>    It is easy enough to do manually, but why?
> 
>                                       Gary D. Duzan
>                          Humble Practitioner of the Computing Arts

The latest version of the Makefile includes this comment:

# The Makefile over in ../../distrib/utils/x_route
# would like keywords.[ch] to always exist here, so
# they are now checked in as sources.