sp_help_job BOL documentation error by Wayne Sheffield

In the BOL for sp_help_job (http://msdn.microsoft.com/en-us/library/ms186722.aspx) it states that you must provide either @job_id or @job_name, but not both. Actually, you can supply no parameters to retrieve information about all jobs.

Furthermore, in the code for sp_help_job, is the following remark:
-- The caller must supply EITHER job name (or job id) and aspect OR one-or-more of the set
-- parameters OR no parameters at all