Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
G
А ещё можно почитать здесь.Тоже всё достаточно расписано)
https://forum.motr-online.com/topic/152628/guillotine-cross-after-rebalancing