CAD > Snap > X-Grid Snap

Snap to an x-grid spacing.

If the pick-box is located over the corner of an entity, that corner will be selected.

Otherwise the nearest point at the x-grid spacing on the nearest edge will be selected.

The pick-box must be located over an entity or construction line.

Since the x coordinate values are constrained to the prescribed X-grid spacing, the y and z coordinate values are calculated from the equation of the selected line.

The grid spacing and location are defined either by picking the X-Grid Snap button a second time or use

CAD > Snap > Cursor/Grid Setup   setup the cursor/grid spacing and orientation.

X-grid snap can be used in conjunction with any of:

CAD > Snap > None   Disable snapping.

CAD > Snap > Edge   Snap to the nearest edge.

CAD > Snap > Tangent Snap   Force cursor tangent to the selected edge.