Now there is a good option to set Focus box for good framing in crop mode.
"Pref\Focus Box settings\Snap points - Centre to x5RAW@. It works good, but this point is too far from sensor's centre.
The another good point is closer to the centre - 5 steps to the right plus 3 steps down. Is it possible to change Snap points - Centre to x5RAW to this point?
Thanks very much to all developers.
5D3, magiclantern-Nightly.2015Aug19.5D3113.
Sorry for bubble posting.