vgroup_id

IN:

Vgroup identifier returned by Vattach

	Purpose	Terminates access to a vgroup.
	Return value	Returns SUCCEED (or 0) if successful and FAIL (or -1) otherwise.
	Description	Vdetach detaches the currently-attached vgroup identified by vgroup_id and terminates access to that vgroup.
		All space associated with the vgroup, vgroup_id, will be freed. Each attached vgroup must be detached by calling this routine before the file is closed. Vdetach also updates the vgroup information in the HDF file if any changes occur. The identifier vgroup_id should not be used after the vgroup is detached.

	FORTRAN	integer function vfdtch(vgroup_id)
		integer vgroup_id