About Editing Lines
Double-click a line to edit it. You can modify a single point, one or more line segments, or the entire line. You can add, delete, or move its points or segments and change its angle, length, or arc. An arrow indicates the line direction and the current point.
You can use the following tools when working in Line Edit mode:
Line Navigation—Navigates along a line to edit from a specific point.
Point Functions—Changes the point symbols in a line.
Query Segments—Queries the properties of a line.
Line Point Properties—Opens the Line Point Properties dialog box to change line point properties.