PL - "Programming Languages" or "Procedural Languages"?

Hi all,

I just found "PL" is explained as "Programming Languages"
in the Acronyms section.

http://www.postgresql.org/docs/current/static/acronyms.html

I think this should be "Procedural Languages" because
"Procedural" is used in the Server Programming section.

http://www.postgresql.org/docs/current/static/server-programming.html

I've created a patch, but which should we use?

Regards,
--
NAGAYASU Satoshi <satoshi.nagayasu@gmail.com>