| TYPE | NAME | DESCRIPTION |
|---|---|---|
| INT32 | run_mode | Interactive, non-interactive |
| IMAGE | img | The Image |
| DRAWABLE | drw | The Drawable |
| FLOAT | azimuth | The Light Angle (degrees) |
| FLOAT | elevation | The Elevation Angle (degrees) |
| INT32 | depth | The Filter Width |
| INT32 | embossp | Emboss or Bumpmap |