B 737 FMC Alert Light

[Sunrig]

I just recently had a conversation during a long trip on the flightdeck and both of us couldn`t find the answer. So maybe somebody knows it:

FMC Alert Light

A/P A/T FMC
P/RST P/RST P/RST

What does P/RST stand for? Is it press/ reset?

Thanks in advance!