First              {Shift + F1}

Go to Diagram 1

Previous        {Shift + F2}

Go to Previous Diagram

Next              {Shift + F3}

Go to Previous Diagram

Last                {Shift + F4}

Go to Last Diagram

List of Diagrams

Show Diagram List Window - you can also search from this list

By Class       {Shift + F5}

Select diagrams by class

Go to Diagram {Shift + F6}

Go to Diagram number

Up to Parent       {PageUp}

Go to Last Parent

Down to Child   PageDown

Go to the diagram linked to the symbol

Show Outline {Ctrl-T]

Show the hierarchical window