For each alternate reference system defined in the Setup Reference Location Methods window, the application creates a window that allows you to create and maintain the sectioning of your road network under the alternate reference system.

A record in this window describes a length of road in the alternate LRM and also cross-references that length of road to its base LRM description. This window contains two sets of columns:

• The set of columns that define location in the base LRM. This is the set of columns shown in the bottom pane of the Setup Location Referencing Methods window when the base LRM is selected in its top pane.
• The set of columns that define location in the alternate LRM (pertinent to this window). This is the set of columns shown in the bottom pane of the Setup Location Referencing Methods window when this alternate LRM is selected in the top pane.