pub const HORIZON_CROSS_FRAME_SWITCH: &str = "BREP_HORIZON_CROSS_FRAME";Expand description
BREP_HORIZON_CROSS_FRAME: set to "0", the wrapped-horizon lane combines
its period images per image (Inside when any image counts odd) instead of
summing each loop’s parity over the images. Read per QUERY, not when the
face is prepared; see horizon_cross_frame.