BUG #18372: Timezone documentation and use of TZ and PGTZ environment variables missing since version 7.4

The following bug has been logged on the website:

Bug reference:      18372
Logged by:          James Gilbert
Email address:      jgrg@sanger.ac.uk
PostgreSQL version: Unsupported/Unknown
Operating system:   Any
Description:

As far as I can tell, the documentation of the TZ and PGTZ environment
variables read by the PostgreSQL still behaves as described in the
documentation for version 7.4:


https://www.postgresql.org/docs/7.4/datatype-datetime.html#DATATYPE-TIMEZONES

but is absent from more recent versions.

    James