Hi RD,

re:
> Is there some documentation/tutorials about the Grid settings in MoI3d
> that explains each parameters in details

Sorry no there isn't really anything for that because it's pretty simple.

Grid size controls the size of one grid block.

Snap size controls the size of one grid block for snapping. You can set it separately from the visual grid size so you can do stuff like snap at 0.5 intervals but have the grid showing at 1 unit blocks.

Grid sections - controls the extent of the grid along one axis direction. Grid sections = 10 for example will make a grid with 10 blocks in it from the origin to the end of the x axis.

Accented lines every X - this controls how frequently the heavier accented lines will be.

- Michael