Log Message:-----------Wording improvement (may -> can)
Modified Files:-------------- pgsql/doc/src/sgml: datatype.sgml (r1.157 -> r1.158) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/datatype.sgml.diff?r1=1.157&r2=1.158) libpq.sgml (r1.180 -> r1.181) (http://developer.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/libpq.sgml.diff?r1=1.180&r2=1.181)