[HACKERS] Log reader?

[Dann Corbit]

Title: Message

Is there a log reader for PostgreSQL that is documented?

This query failed:

http://www.postgresql.org/search.cgi?ul=http%3A%2F%2Fwww.postgresql.org%2Fdocs%2F7.4%2Finteractive%2F%25&q=%22log+reader%22

Maybe another terminology is used instead.