> I can not see any information in pdf document about built-in LIST function

It is mentioned in the FB 2.1 Alpha 1 release notes, but you'd better
look into:

%FIREBIRD%\doc\sql.extensions\README.list.txt



--
Best Regards,
Thomas Steinmaurer
LogManager Series - Logging/Auditing Suites supporting
InterBase, Firebird, Advantage Database, MS SQL Server and
NexusDB V2
Upscene Productions
http://www.upscene.com