Overview of 1 point offset
A 1 point offset enables you to create a point or vertex offset from a single reference point. The reference point can be set using a pen, GPS, or manually entered coordinates. A 1 point offset uses bearing and two other parameters such as slope distance, horizontal distance, vertical distance, or inclination to calculate the offset.
Using the snapping environment with reference points: Use snapping to create your reference point at the location of an existing point feature or vertex of a line or polygon feature.