I am using MP 1.3.38 and in the Auto WP / Survey / Grid Options there are various settings for:
1. Overshoot[m] (this appears twice) and LeadIn[m] - I would appreciate an explanation of how these work when planning my missions.
2. Copter Options - Heading Hold?
3. Plane Options - Alternate Lanes/Min Lane Separation ?
Could not find any other documentation about them here, or on ardupilot.org .