F5 and F6 dimming brightness keys working in tahrpup64 on Lenovo Thinkpad L440!

[Dingo]

Woof Woof!

I'm so excited! It may be that this is already a very known thing, but this evening, playing with tahrpup64, I started to press F5 key that reduce brightness and works in Windows as usual. I was pressing several times when, suddenly, I noticed brightness was lower! I checked my actions and finally realized that pressing six times the F5 key, I was able to reduce brightness by one step and similarly, pressing six times F6 keus I was able to increase brightness, wow!