2018-01-09 19:07:06 UTC
Next I called the dispatcher.
"Can you tell me if Lieutenant Marino is marked on?" I asked.
She came back to me. "He's marked on"
(Cruel and Unusual by P. Cornwell)
context: The narrator's talking with the city police station's dispathcer.
question about: the meaning of "be marked on".
I guesss it is a police jargon, meaning he's out on patrol.
There must be a board with lamps to show which detective is on duty.
Am I right?