Options > Geometry > Snapping Grids

X Origin — This sets where to start the grid points in the X direction in relation to the current UCS.

Y Origin — This sets where to start the grid points in the Y direction in relation to the current UCS.

X Spacing — This sets the distance between grid snap points in the X direction.

Y Spacing — This sets the distance between grid snap points in the Y direction.

High values of Spacing can result in the model displaying slowly.

X Length — This sets how far the grid displays in the X direction.

Y Length — This sets how far the grid displays in the Y direction.

Section — This sets how many segments to divide the open geometry into when snapping to sections.

Grid resizes to match — This sets whether the size of the grid is calculated from the Length values or the stock dimensions.

Grid Display — This sets when you see the grid and when you do not.

1. Always show — This displays the grid, even if you have turned off snapping to grid.
2. Always unshow — This hides the grid even if you have turned on snapping to grid.
3. Automatic — This displays the grid when you are snapping to the grid, and hides the grid when you are not snapping to the grid.

You can change the size of the snapping cursor with the Snapping Point Size option on the General page of the Viewing Options dialog.