Use the Structure view as a Preview, that allows you to get a "10,000-feet" look on a diagram. The shadow area represents the visible part of a diagram. As you zoom in or out, or change the shape of the RubyMine windows, the size of the shadow area changes accordingly.
Click thumbnail to view larger image.
- Keeping the mouse button pressed, move the shadow area to obtain the desired view.
- Select one or more nodes in the diagram, and the corresponding nodes in the Preview are marked dark gray.