18 12 13 26 are the GPIO ports on the Raspberry Pi thatis at the core of the ASIAir. The config command enables those ports for output and switches them on.
I thought you would be able to use StellarMate on the QHY Starmaster without having to modify.
RPi3 Ubuntu Server 20.04, Windows 10 AMD64, AAEON UP Core Ubuntu Desktop 20.04
Avalon M-Uno, EQ6 Pro, Atik420, ASI1600MM-C, ASI120MM-S, DBK21AU04, ZWO EFW, Optec TCFSi
Vixen R150S, GSO RC8, ST80