Using the horizontal view bar
You can divide the Edit pane into two views using the horizontal view bar. This can be useful when you are working in a long rule that requires a lot of scrolling, or when you want to copy code from one section of a long rule to another.
To split the Edit pane into two separate views, click and drag the horizontal view bar down.
Drag the horizontal view bar up and down to adjust the size of the two views.
To close the second view and return to a single view, drag the horizontal view bar back up to the Rules Editor toolbar.