|A zone ID is used to identify and
assign properties to a group of objects. You define a zone ID by creating
boundaries which enclose the group of objects. In the illustration below
the user has drawn a circle around some lines and components. The circle
defines the boundary which becomes part of the zone. When you assign
certain properties to the zone they will also be assigned to the objects
within the boundaries of the zone.
A zone ID can extend over several documents and contain numerous
boundaries. While a zone ID can extend to multiple documents, once you
create a boundary, it becomes local, or specific to that document. When you
change the boundaries of the zone ID you do it locally so that the change
applies to a specific document.
Before you create zones you must designate a directory in which they
will be stored. See Understanding Project Resource Management.