PRIVATE GROUPS

Group Names	Variable Names		Details
cartesian			compact	0
	x		description	Cartesian coordinates
	y		dimensions	3
	z		distribution	DEFAULT
			group type	GF
			stagger type	NONE
			timelevels	1
			variable type	REAL
spherical			compact	0
	r		description	Spherical polar coordinates
			dimensions	3
			distribution	DEFAULT
			group type	GF
			stagger type	NONE
			timelevels	1
			variable type	REAL