Set Background Color

This command sets which color to use as the background color for other Raster commands such as Trace Line. For example, one image could have a black background and white lines, and another image could have the opposite with a white background and black lines. The Raster commands need to know which type of background the image has.

This command uses the current image. If the current image isn't already set, then the program prompts to select the image. Then the program reports the current background color and prompts to pick a point on the image. The program reads the color from the image at the picked point to set the background color.

Prompts

Select image: Pick on the image (often you will need to pick on the boundary of the image to select it)
Current background color: red=255 green=255 blue=255
Pick a point in the image to set the background color: pick point
Background color changed to: red=232 green=232 blue=232

Pulldown Menu Location: Raster
Keyboard Command: ocrbgcolor
Prerequisite: an image in the drawing