id-name
Specifies the identifier name. The identifier name is a string
of 1 to 31 alphanumeric characters that can contain underscores
and dollar signs. The name must contain at least one nonnumeric
character.
user-spec
Specifies the UIC identifier that uniquely identifies the user
on the system. This type of identifier appears in alphanumeric
format. For example: [GROUP1,JONES].