The escape command sends device-specific information to a device. Videodisc devices recognize this command.
escape device escape flags
device
Identifier of an MCI device. This identifier or alias is assigned when the device is opened.
escape
Custom information to send to the device.
flags
Can be “wait”, “notify”, or both. For more information about these flags, see The Wait, Notify, and Test Flags.
Returns zero if successful or an error otherwise.
The following command sends the escape string “SA” to the videodisc device:
escape videodisc SA