VKB-SIM

I'm hoping someone can help me out.

I purchased the Gladiator NXT EVO ‘WWII Combat Edition’ joystick. I finally figured out how to map the buttons after much experimentation.

My question is what are the buttons on the bottom (F2 F1 F3)? The F3 has the blue light on. I'm assuming they're function keys but I don't know how to use them.

Any help will be much appreciated!

Just regular buttons, ready to get mapped to any game controls you'd see fit. Any button on your joystick, these 3 included, could get assigned to different functions through VKBDevCfg. See some tutorials as examples on our YT channel.
The blue LED being on is good, don't worry about it.

Thank you. I appreciate the explanation.