To Define a Spatial Extent for the Import Process

Delete any previously imported features and toggle off the display of any referenced files.
Place a rectangular fence on the map of Australia.
In the Interoperability dialog, select the Import process node.
Select Fence for the Spatial Area.
Right-click on the feature node and select Import.
Only those features within the fence will be imported.
Select the feature node, right-click and select Save.
This will save the import process with the fence coordinates posted.
Reference the saved Import process again.
The reference operation will only reference those features inside the saved fence area.

Note: Only a rectangular fence is supported.

This is helpful if you have a very large file, perhaps a list of survey monuments. You can define an import process for a particular project. Set up the appropriate symbology and define the project area with a rectangular fence. You can then reference or import only the project area, making the process much faster and much simpler.