Snap Grid
You can use a grid to force the cursor to stop in regular increments.
Most drawing probably doesn't lend itself to restricting cursor movement, but there are times when drawing in modules such as two feet or 100mm is desired.
This is when the snap grid comes in handy.
From the View menu, you can
Or you can click the snap labels in the Status Bar.
(a Snap Grid spacing is saved for each zoom level)
You will use the Snap Grid Settings form to adjust the grid spacing.
See Preferences Snap Grid for other options.
Press the Control key to overide the Snap Grid action.