If you haven't done so already, open Map Tools. Then tap on Line Interps.

A screen similar to the one below will be displayed (depends on what lines are displayed on the map at the time).

1)To view the interpretation of a line tap on the > icon to the right of the line entry in the list.

2)To return from viewing the interpretation, tap on the < Reports button at the left of Toolbar.

3)To close this screen place your finger on the screen title Reports in the Toolbar, and as you hold it firmly down, drag the screen downwards two or three inches, then release your finger.