If you have a Radio Bridge connected, from any navigational page you can press the Radio button and this will show you the current frequency, standby frequency allow you to change the frequency, volume and squelch. The LX software also gives you a history of the last used frequencies or will take the frequency associated with any airfield in the airports database. A real time and workload saver when you are low and need to call ATC!
All this clever stuff makes light work in stressful situations. So if you are on a navigational page (Airport, waypoint or Task) then you can press the Xpdr button for Transponder and this will show you the current squawk code, Transponder mode and Flight level. You can then adjust the mode or squawk code via the drop down menus, rotary knobs or the LXNAV remote stick.