On Transact SQL language the sp_lock is part of Database Engine Stored Procedures and shows information about locks.
Sp_lock syntax:
sp_lock [ [ @spid = ] 'session ID' ] ;
Sp_lock example 1:
USE model;
GO
EXEC sp_lock;
GO
Sp_lock example 2:
USE model;
GO
EXEC sp_lock 53,54;
GO