Returning OUTPUT values from stored procedures

Because i'm forever revisiting old code for the simplest of functions,
here is my memory jogger for retrieving OUTPUT values from stored procs!

Fig 1 : Really easy stored procedure looking at an INFORMATION SCHEMA view.
Specify the OUTPUT cluase in the parameter definition.

CREATE PROCEDURE dbo.RoutineCount (
    @RoutineType VARCHAR(20),
    @RoutineCount INT OUTPUT )
AS
BEGIN
SELECT @RoutineCount = COUNT(*) 
FROM INFORMATION_SCHEMA.ROUTINES 
WHERE ROUTINE_TYPE = @RoutineType
END
GO

Fig 2 : Returning the value from the procedure.
Declare a variable to pass it into and specify the OUTPUT clause.

DECLARE @CountOfRoutines INT

EXEC dbo.RoutineCount 
    @RoutineType = 'procedure',
    @RoutineCount = @CountOfRoutines OUTPUT

SELECT @CountOfRoutines AS RoutineCount

NB : You need to specify OUTPUT both in the sp definition and the sql that calls the proc.