Check Enable Snapping to Points to enable all selected snap options.

• Checking Snap to PlanSwift Points will snap only to points created by the PlanSwift digitizers.
• Checking Snap to CAD Points enable PlanSwift to snap to points created in CAD files.
• Checking Hover to Snap Axis enables you to snap to a point, but if you hover at that point for a second or two the red snap box will turn green, thus locking on that axis.

Check Ortho to lock the digitizer on the 90 degree or 45 degree axes.

•  Checking Smart Ortho allows a bit more refinement: snapping to the 90 or 45 degree axis only when you are within a few degrees of them.