In this exercise, you will use the Horizontal Alignment Editor to view and edit PI, curve, and spiral data for alignment A2.

1. On the Alignments menu, click Edit to display the Horizontal Alignment Editor.

   Use the following steps to view data for the first curve in the alignment.

2. In the Edit section, click in the second row of the Station column, and then click Edit Curve to display the Curve Detail Window.

3. When you have finished reviewing the data for the first curve, click Next to view data for the second curve.

4. When you have finished reviewing the data for the second curve, click OK to return to the Horizontal Alignment Editor.

   Use the following step to change the Northing value for the fourth PI point of the alignment to move it south 40 m.

5. Click in the fourth row of the Northing column, enter 5018525.433 as the new Northing value, and then press ENTER.

The station and direction values change for the adjacent tangent segment in the alignment.