Panning and zooming at the current diagram level

When the current level of the diagram is so large that it doesn’t all fit in the viewable part of the window, you can:

•      Pan

o  Roll the mouse wheel

o  Drag the scroll bar thumb

o  Right-click over a scroll bar and select the navigation option that corresponds with what you want to do

•      Zoom

o  Hold down the CTRL key and roll the mouse wheel

o  Click the  toolbar buttons

o  Use View > Zoom In and View > Zoom Out

Typically, larger, more complex diagrams should be divided into subsystems and encapsulated in compound blocks.