Light Spray: To place a light spray, click on a light source, then drag out the spray in the direction and to the length you desire.

To move the light spray along the light source (other than a point source), select the hotspot ray (see picture below) and drag it vertically along the source. You can also use the up and down arrow keys to move the spray one pixel at a time.

To extend or contract a ray and change its direction, select the ray. Click on the indicated hotspot and drag the ray to the desired length and direction.

To change the angular spread of the rays, select the ray. Click on the indicated hotspot and drag the spray to the desired angular spread. Light sprays only follow actual light paths in Run mode.

In a spray's Properties Box, you can change the number of rays (between 2 and 10) in the spray. The remaining properties are identical to those of the light ray.