The GROUP ELEMENTS attribute
defines the attributes that are members of the group. This clause is
optional.
The group of attributes may be fixed or extensible - if the group is
extensible an attribute may be added when the group is used in a
particular package definition.
The description
is simply a delimited text string. It is normally a plain English
description.
The REGISTERED AS object
identifier is a unique identity that is used in the protocol to
identify this particular attribute group.