Difference between mesh_inset and probing_margin (no replies)

I've been tinkering with my 3Dtouch (basically a BLtouch clone) on my CoreXY and have been trying to setup UBL in Marlin. I There are a few configs I haven't been able to find any useful resources about, as I'm having a hard time understanding and tackling with some of them
I do not understand mesh_inset and probing_margin and/or their difference.
Also couldn't find anything useful about segment_leveled_moves and leveled_segment_length.