Snap
Use the Snap tab to place points accurately while drawing and editing.

Object Snap
Enables snapping to the selected geometric snap-point modes on nearby objects.
Grid Snap
Restricts picked points to the configured grid spacing.
Ortho
Constrains supported point input horizontally or vertically from the previous point.
All
Enables all available object snap-point modes.
End
Snaps to the endpoint of a curve or segment.
Mid
Snaps to the midpoint of a curve or segment.
Center
Snaps to the centre of a circle, arc or ellipse.
Quad
Snaps to quadrant points on circles, arcs and ellipses.
Point
Snaps to point objects in the drawing.
Intersection
Snaps where two supported objects intersect.
Perpendicular
Snaps to a point that makes the current segment perpendicular to another object.
Tangent
Snaps to a tangent point on a circle or arc.