GROUP allows you to select grouped entities.

Specify a group selection method by choosing from the following options:

SELECT - to select a subgroup of entities. When you select
any entity in the desired subgroup, all entities in the
subgroup are selected automatically, regardless of whether
or not they are displayed.

BY NAME - to select a group of entities. Enter an existing
group name and press <Enter> or press <Enter> to accept the
name displayed in parentheses.  All entities (in all
subgroups) in the group are selected, regardless of whether
or not they are displayed.
