You will find the Q4XP has a lot of custom commands to work with, but it also will handle the same operation though x-planes default commands as well.

JPad Commands

FJS/Q4XP/JPad/Toggle_Left_Side_Show
FJS/Q4XP/JPad/Toggle_Right_Side_Show
FJS/Q4XP/JPad/Toggle_Popup

Toggling the left or right JPad will also change the saved option for them.

Autopilot Commands

‼️DO NOT USE THESE COMMANDS ‼️

sim/autopilot/fdir_servos_down_one
sim/autopilot/fdir_servos_up_one
sim/systems/yaw_damper_toggle

These work as AP disconnects. ( AP Dis on yoke moves )

FJS/Q4XP/Autopilot/AUTOPILOT_DISCONNECT
sim/autopilot/disconnect
sim/autopilot/servos_and_flight_dir_off
sim/autopilot/servos_fdir_yawd_trim_off
sim/autopilot/servos_off_any
sim/autopilot/servos_yawd_off_any
sim/autopilot/servos_yawd_trim_off_any

These press the AP button on the FGCP.

FJS/Q4XP/Autopilot/FGCP_BUTTON_AP
sim/autopilot/fdir_servos_toggle
sim/autopilot/servos_toggle
sim/autopilot/servos_on