The Imports and Coordinate Systems Pane contains the controls used to add, delete, edit or view external geometry in your project. The Imports and Coordinate Systems Pane has its own toolbar allowing you to perform import related tasks such as setting scale/rotate, adding an import from disk, deleting an import, and navigating between import components during import marking.
The Imports and Coordinate Systems Pane is made up of various windows used to display and interact with the external geometry in your project.
See Imports and Coordinate Systems Pane and Working with Imports and Coordinate Systems for details on the features of this pane.