Moving End Points with the Arrow Tool
You can use the arrow tool to change the length of straight-line and curve segments. Simply grab and reposition the segment's end points.
When you use the arrow tool, the segment you want to modify must not be selected. If the segment is selected, the arrow tool simply moves the segment as a unit. Always note what kind of icon the arrow pointer is displaying as it hovers over the line you want to modify (Figure 3.35).
Figure 3.35 The small icons appearing with the arrow pointer indicate what type of graphic element lies beneath the pointer.
For the following exercises, make sure that the item you want to modify is deselected.
To reposition the end of a line segment with the arrow tool:
Position the pointer over the end point of the line.
The corner-point modifier appears.
Reposition the end point.
The arrow tool now operates like the straight-line tool (the line segment changes to preview mode). Dragging away from the existing line lengthens it; dragging toward the existing line shortens it (Figure 3.36).
Figure 3.36 You can use the arrow tool to change a line segment's length.
Release the mouse button.
Flash redraws the line segment.