Controls whether generic or photometric lights are used, and specifies the lighting units for the drawing.
| Type: | Integer |
| Saved in: | Drawing |
| Initial value: | 2 |
When this system variable is set to 1 or 2, photometric lighting is enabled; otherwise standard (generic) lighting is used.
| 0 | No lighting units are used and standard (generic) lighting is enabled | Find |
| 1 | American lighting units (foot-candles) are used and photometric lighting is enabled | Find |
| 2 | International lighting units (lux) are used and photometric lighting is enabled | Find |