Target layer: Polyline, Polygon

Description: Click on a polyline or polygon boundary - a new vertex is introduced. 

Advantages: 

• Increases the productivity
• Preserves the topology when inserting a vertex on the shared boundary of two adjacent polygons by inserting a vertex with the same location in both polygons. See "Topology problems when editing in ArcGIS" for details.
• Single mouse action to perform the task.

Hot Keys (Pressing these keys when the tool is active will allow changing  the parameters used by the function): 

• "Z" - zoom in and center the map at current mouse position
• "X" - zoom out and center the map at current mouse position
• "C" - pan -  center the map at current mouse position

Note: Switch on the Draw Vertices command to visualize the location of the vertices