The Aperture command controls the size of the rectangle area (aka pickbox) used to select points or polylines from the screen.
- Points: Indicate how close to a point you need to be for it to be selected.
- Lines: Indicate how close to a point you need to be for it to be selected.
Note: Smaller values result in more precise pick results; larger values result in more forgiving picks.
Note: The maximum value for each option is 40.