Apache Reference: mod_log_config

mod_log_config - Generic Request Logging
Since Apache 1.0, src/modules/standard/mod_log_config.c
Robert S. Thau (1995)

mod_log_config provides for logging of the requests made to the server, using the Common Log Format (CLF) or any other user-specified format. It uses printf(3)-style format strings to define the log file entries. These entries can be written to a file or a reliable pipe connected to a spawned program.

Directives:

CookieLog	CustomLog
LogFormat	TransferLog