Yorick routines defined in file slice3.i

_	+++		_slice2_part		mesh3		split_bytscl
	_construct3		_walk3	P	+++		split_palette
	_isosurface_slicer	G	+++		pl3surf	T	+++
	_pl3leaf		getc3		pl3tree		to_corners3
	_pl3tree		getc3_rect		pl3tree_prt	X	+++
	_pl3tree_accum		getv3		plane3		xyz3
	_pl3tree_add		getv3_rect	S	+++		xyz3_rect
	_pl3tree_count	I	+++		slice2		xyz3_unif
	_pl3tree_prt		iterator3		slice2_precision		+++
	_pl3tree_slice		iterator3_rect		slice2x		+++
	_plane_slicer	M	+++		slice3		+++