MAV_CMD_NAV_LAND=21,/* Land at location |Empty| Empty| Empty| Desired yaw angle.| Latitude| Longitude| Altitude| */
MAV_CMD_NAV_TAKEOFF=22,/* Takeoff from ground / hand |Minimum pitch (if airspeed sensor present), desired pitch without sensor| Empty| Empty| Yaw angle (if magnetometer present), ignored without magnetometer| Latitude| Longitude| Altitude| */
MAV_CMD_NAV_CONTINUE_AND_CHANGE_ALT=30,/* Continue on the current course and climb/descend to specified altitude. When the altitude is reached continue to the next command (i.e., don't proceed to the next command until the desired altitude is reached. |Empty| Empty| Empty| Empty| Empty| Empty| Desired altitude in meters| */
MAV_CMD_NAV_ROI=80,/* Sets the region of interest (ROI) for a sensor set or the vehicle itself. This can then be used by the vehicles control system to control the vehicle attitude and the attitude of various sensors such as cameras. |Region of intereset mode. (see MAV_ROI enum)| MISSION index/ target ID. (see MAV_ROI enum)| ROI index (allows a vehicle to manage multiple ROI's)| Empty| x the location of the fixed ROI (see MAV_FRAME)| y| z| */
MAV_CMD_NAV_PATHPLANNING=81,/* Control autonomous path planning on the MAV. |0: Disable local obstacle avoidance / local path planning (without resetting map), 1: Enable local path planning, 2: Enable and reset local path planning| 0: Disable full path planning (without resetting map), 1: Enable, 2: Enable and reset map/occupancy grid, 3: Enable and reset planned route, but not occupancy grid| Empty| Yaw angle at goal, in compass degrees, [0..360]| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal| */
MAV_CMD_NAV_SPLINE_WAYPOINT=82,/* Navigate to MISSION using a spline path. |Hold time in decimal seconds. (ignored by fixed wing, time to stay at MISSION for rotary wing)| Empty| Empty| Empty| Latitude/X of goal| Longitude/Y of goal| Altitude/Z of goal| */