AutoCAD 2008 User's
Guide > Create and Modify
Objects > Control the
Properties of Objects > Work with
Layers >
Work with Layer States
You can save layer settings as named layer states., restore, edit, import them from other drawings and files, and export them for use in other drawings.
You can save the current layer settings to a layer state, make changes to the layer state, and restore them to the drawing later.
You can import layer settings from other drawings and export layer states.
