Command: GETSEL
Select an object on the Source layer <*>: Use a selection set method or press ENTER for all layers
Select an object of the Type you want <*>: Use a selection set method or press ENTER for all object types

Usage Example:
Draw objects on different layers, and select lines from LAYER1

Select an object on the Source layer <*>: Select an object on LAYER1
Select an object of the Type you want <*>: Select a LINE object
Collecting all LINE objects on layer LAYER1...
1 object has been placed in the active selection set.