Pseudo-namespace; it doesn't exist in code or script runtime, only in this documentation.
APAltitudeMode
Altitude modes for the autopilot system.
@ ALT_NONE
Disables all the altitude modes.
@ ALT_FIXED
The autopilot keeps the aircraft at a constant altitude set by AutopilotClass.adjustAltitude(int adde...
@ ALT_VS
The autopilot keeps the aircraft at a constant rate of climb/descent set by AutopilotClass....