Log Message:
-----------
Add a note about preferred window width to the section about code
formatting conventions.
Modified Files:
--------------
pgsql/doc/src/sgml:
sources.sgml (r2.36 -> r2.37)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/doc/src/sgml/sources.sgml?r1=2.36&r2=2.37)