Specifies the global or active coordinate system. The active coordinate system name displays in the box. Recently used coordinate systems that are appropriate to assign as the active coordinate system, the Global coordinate system, Select from Workspace, and Select from Model options display in the list. The most recently used coordinate system displays at the top. All View Cube manipulations respect this coordinate system.
Select Interactively
Turns on or off the interactive selection. When this option is on, you can select the coordinate system in a graphic view or any of the explorers.
Select from Workspace
Displays the Coordinate System Dialog with the Workspace tab open. The workspace is the subset of the active model database you specified when you started your design session. Navigate the hierarchy to select the parent system, and then click OK.
Select from Model
Displays the Coordinate System Dialog with the Model tab open. The model is all of the objects in the active model database, including those that are not part of your workspace. Navigate the hierarchy to select the parent system, and then click OK.