Log Message:
-----------
small documentaion changes
Modified Files:
--------------
pgsphere/doc:
pg_sphere.xml (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/pgsphere/pgsphere/doc/pg_sphere.xml.diff?r1=1.2&r2=1.3)
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