TAPEMGR LOAD device [filespec]

 	This command will load a virtual tape container file. The filespec
 	must include a full path in unix style (for example
 	"/files/tape.vtape"). The string must be enclosed in quotes. The path
 	must be on a mounted device that is not the system device.

 	If no filespec is given then the file as specified in the emulator's
 	configuration file will be used.

 	The tapeunit may not be mounted for this operation to succeed.