Log Message:
-----------
Recommend more clearly custom pg_dump format over tar, buy showing
custom format examples first.
Modified Files:
--------------
pgsql/doc/src/sgml/ref:
pg_dump.sgml (r1.83 -> r1.84)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/ref/pg_dump.sgml.diff?r1=1.83&r2=1.84)