Editing vertices and segments
When the Edit tool is active and you are editing the shape of a feature, the Edit tool pointer changes from a black arrow to a white arrow to show you can directly select vertices and modify segments. The black arrow pointer is shown when you are working with whole features rather than the individual vertices and segments that make up the feature.
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Click the Edit tool  on the Editor toolbar and click the feature. on the Editor toolbar and click the feature.
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 Click Edit Vertices  on the Editor toolbar, or simply double-click the edge with the Edit tool. When you are working with the vertices of a feature, the Edit Vertices toolbar appears, providing an easy way to select vertices, add and delete them, and modify segments. on the Editor toolbar, or simply double-click the edge with the Edit tool. When you are working with the vertices of a feature, the Edit Vertices toolbar appears, providing an easy way to select vertices, add and delete them, and modify segments.Below are some of the ways you can edit vertices and segments with the Edit tool. Insert a vertex Click the Add Vertex tool  on the Edit Vertices toolbar. You can also right-click a segment and click Insert Vertex, or hold down the A key and click. on the Edit Vertices toolbar. You can also right-click a segment and click Insert Vertex, or hold down the A key and click.Insert a vertex and move it in one step Hold down A and click and drag the new vertex. Delete a vertex Click the Delete Vertex tool  on the Edit Vertices toolbar and click the vertex to delete. You can also right-click a vertex and click Delete Vertex, or hold down the D key and click. on the Edit Vertices toolbar and click the vertex to delete. You can also right-click a vertex and click Delete Vertex, or hold down the D key and click.Delete multiple vertices Click the Delete Vertex tool  on the Edit Vertices toolbar and drag a box around the vertices to delete. You can also hold down D and drag a box, or press BACKSPACE, to delete selected vertices. on the Edit Vertices toolbar and drag a box around the vertices to delete. You can also hold down D and drag a box, or press BACKSPACE, to delete selected vertices.Move a vertex by dragging it Select one or more vertices and drag and drop them to the new location. Move a vertex by a relative x,y distance Select one or more vertices, right-click, then click Move. Move a vertex to an absolute x,y location Right-click the vertex and click Move To. Change the segment type Right-click a segment; point to Change Segment; then click either Straight, Circular Arc, or Bézier. Change the shape of an arc segment Click and drag an arc segment, or press the R key and type a radius. 
- Right-click anywhere on the map and click Finish Sketch.