tv_is_mapped

	is_mapped.i4.v = tv_is_mapped()

	This routine determines if the current TV window is mapped.

	This function returns status values as follows:

	TRUE			current TV window is mapped
	FALSE			current TV window is not mapped

	This function requires the following include files:

	cnsparam_h, tvlib_h

	Related functions:

	tvmap, tvunmap

	C/C++ usage:

	int	is_mapped;

	is_mapped = tv_is_mapped();