1. Create feature points, arcs, nodes and vertices.
In the map module, create feature objects in the active coverage.
Use the Create Arc tool to create arcs in the map coverage.
Begin creating a new arc by clicking in the graphics window at either arc end. If clicking on an existing feature node, vertex or arc, the new arc will snap to that object.
Double-click or press the Enter key to terminate the arc.
Use the Create Point/Node tool to create additional nodes alone or to split arcs.
2. Modify arcs.
Feature arcs, whether digitized or incorporated from a boundary condition or a material coverage, often need to be edited after initial creation.
1. Create additional vertices on arcs.
Use the Create Vertex tool to add vertices along arcs.
2. Refine the arc shape.
Use the Select Vertex tool and the Select Node tool to move/edit existing arcs and refine the shape by dragging the nodes/vertices.