
Set MOUSE-POS
Click on , and select the Set MOUSE-POS tool. Now you can click on any grid location to set an
"X" marker.
The instruction MOUSE-POS returns the coordinates of this marker. See MOUSE-POS instruction.

To clear the marker click on it again. When there is no "X" marker set, the MOUSE-POS instruction returns (-1, -1).
Another way to clear the MOUSE-POS marker is from the menu: Edit >> Clear MOUSE-POS (Or press Command-M).
This feature can be used to give mouse input to organisms. Either for interactive purposes, or to set a goal for the evolving creatures to seek out.