Is the login for the Microsoft Windows account under which the agent runs. job_login is nvarchar(257), with a default of NULL.
[ @job_password= ] 'job_password'
Is the password for the Windows account under which the agent runs. job_password is sysname, with a default of NULL.
[ @frompublisher= ] frompublisher
Is if the procedure is being executed at the Publisher. frompublisher is bit, with a default value of 0. A value of 1 means that the procedure is being executed from the Publisher on the publication database.