mymonitor = "model=X and serial=Y" # match to the monitor with model X and serial Y
mymonitor = "model=X and serial!=Y" # match to all monitors with model X, EXCEPT serial Y
mymonitor = "(model=X and serial!=Y) or serial=Z" # match to all monitors with model X, EXCEPT serial Y; and also to serial Z
eg:
For why this would be useful, see #44
46 is the CLI-side of this