Log Message:
-----------
Wording refinement for external references in man pages.
Modified Files:
--------------
pgsql/doc/src/sgml:
Makefile (r1.80 -> r1.81)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/Makefile.diff?r1=1.80&r2=1.81)