String

"All"

Trigger all cameras listed in the Cameras parameter. Cameras in Triggered state will be re-triggered.

"Triggered"

Re-trigger cameras from the list in the Cameras parameter, that are currently in Triggered state (i.e. waiting for a hardware signal or still in the middle of capturing)

"Untriggered"

Trigger cameras from the list in the Cameras parameter, that are currently in untriggered state (i.e. cameras that have already returned an image or cameras that have just been opened)