Restoring Rotated Sample Lines to Be Perpendicular

To restore a rotated sample line to the perpendicular

1. In the drawing, click a sample line.

   The sample line displays grip edit locations at each vertex.

2. Use the square-shaped end grips to rotate segments off their perpendicular orientation to the parent alignment.
   
3. Click the rotated sample line.
4. Right-click and click Make Orthogonal.

   The rotated sample line (1-2) rotates back to a perpendicular orientation (3) to its parent alignment, but retains the length to which it was stretched or contracted.