Disabling a window

UNMAP is used to disable a window. The user can define what the contents of the pages of the (disabled) window should be after the execution of the UNMAP function. The window pages can be either initialized with X'00' or set to appear to the user as they were before UNMAP.

List of the most important macro operands for closing windows

Operand	Operand values	Meaning
FCT	*UNMAP	Disables windows
SPID		Specifies the address space in which the window is located.
AREA		Specifies the starting address of the window that lies in the address space defined by SPID.
DISPOS		Specifies the state in which the pages of the (disabled) window should remain.
	*FRESH	The window pages are initialized (X' 00' ).
	*UNCHNG	As far as the program is concerned, the windows retain their original contents prior to UNMAP.