To Save a Light File
1. On the View tab, click Scenes and click Edit Scene on the gallery. The Scene Editor dialog box opens.
2. Click the Lights tab.
3. Select the light in the Light List that you want to save.
4. Click . The Save dialog box opens.
5. Type a name for the light file in the New Name box in the Save dialog box.
6. Click OK. The light files are saved with a .dlg extension in the specified location.
Lights scale and reposition parametrically according to the size and position of the model. This makes the light files reusable with any kind of geometry.