When you edit a map, you can set snapping options to place a feature at a precise location relative to another feature. For example, if you want to run a new electric line from an existing transformer, you can set snapping options to connect the line precisely to the vertex of the transformer. You can select which features and specific locations within the features (vertex, edge, or end) to snap to. You also can apply colors to the snapping tools to make it easier to see on the map.
From the Editing or Versioned Editing window, click Settings.
In the Settings window, for each feature that you want to snap to, select one of the following check boxes:
Vertex: to snap to the nearest vertex in a feature of the layer.
Edge: to snap to the nearest line or polygon edge of a feature. Snapped location does not have to fall on a vertex.
End: to snap to an end point of a line or polygon edge.
In the Snapping Tolerance field, enter the distance within which the pointer or a feature is snapped to another location. The smaller the value, the closer the mouse must be to the feature for snapping to occur.
In the Tolerance field, enter the distance within which features must be from the mouse-click in order to be selected.
In the Select Color field, select the color that you want selected features to be displayed.
In the Vertices Color field, select the color you want vertices of features to be displayed.
In the Snap Tips Color field, select the color that you want snap tips to be displayed. A snap tip is text that displays the layer and end element to which a feature is snapped.
Click Apply to close the window and begin editing using the snap options.