|Signal||Alerts the destination panel's client that a button corresponding to a specific destination has been pressed.|
|Turn_On_Lamp||Turns on the lamp corresponding to the given destination. If the lamp is already on, then there is no effect.|
|Turn_Off_Lamp||Turns off the lamp corresponding to the given destination. If the lamp is already off, then there is no effect.|
|Assign||The state of one instance of this class to another instance of this class.|
Note that there is no way for the client of the destination panel to interrogate these states. Note further, that only one button in a given destination panel may be pressed at one time. If an attempt is made to press two, or more, destination buttons simultaneously, and at least of the destination buttons has a corresponding lamp which is not lit, the destination panel computer circuitry will select a single destination which will be transmitted via the "Signal" operation.