I don't know but seems to be incorrect, it is really in this category?
Version 9.1 beta 2
postgres=# select * from pg_settings where name = 'application_name';
-[ RECORD 1 ]----------------------------------------------------------------
name | application_name
setting | psql
unit |
category | Reporting and Logging / What to Log
short_desc | Sets the application name to be reported in statistics and logs.
extra_desc |
context | user
vartype | string
source | client
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Emanuel Calvo
Helpame.com