Library /sys$common/syshlp/helplib.hlb  —  LD  Driver functions, Unload
 	This function unloads a container file from a tapeunit.

 	Function:	IO$_LD_CONTROL

 	P6 = Subfunction: LDIO$K_UNLOAD

 	For all other parameters see the description of the Disconnect
 	driver function.
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