Modules
		cctbx.adptbx cctbx.development.debug_utils scitbx.array_family.flex math random cctbx.development.random_structure sys

Functions
		exercise_through_site_symmetry() exercise_through_space_group(flags, space_group_info) Set-up crystal and constraints f(u_cart) A non-linear function of the 6 components u_cart run()