Plot > Miscellaneous > Dgrid/Lgrid - DOL ratio on grids

Contours the distance to the nearest grid Dgrid divided by the grid spacing Lgrid.

Dgrid is determined by Map3D as the smallest distance between model surfaces and grid planes.

Small values of DOL can be related to low accuracy predictions (DOL=1 for 10-20% error, DOL=2 for 5-10% error, DOL=4 for < 5% error).

For more details refer to

CAD > Properties > Control Parameters