Help is available in a number of different ways.
Context sensitive help
Context sensitive help provides detailed information on the use of each pane and window. To access context sensitive help press 
? or click on a Help button.This opens help in a separate window.
The Mac OS X Help Viewer
The Macintosh Help is similar to the Windows Help, but is displayed inside a web browser window. If you can't see the contents tree in the left pane, try enabling Java in your browser.
PDF help
A PDF version of the help is also installed with the application. You may find this more suitable for printing.
'How do I?' help
Click on the How do I? button on the tool bar to see a list of common tasks you might want to perform. Click on an item in the list to go to the relevant help page. The list of topics shown varies depending on what you are trying to do (e.g. which panes are visible).
Tool tips
Some controls display tool tip windows when you hover your mouse cursor over them. You can turn this feature on/off using the show tool tips checkbox in the 
Preferences window.
'What's This' help
What's This help provides tips on individual controls, e.g. on the function of tool bar buttons, menu items, text entry fields etc.
To access What's This help from the Main window select Help>What's This. Then click on the item you are interested in and a brief description will appear in a small What's This window.
Note pressing Shift+F1 also activates this facility for the Main window.
Web pages
Additional documentation may be available on our web pages. To open the web pages in a browser select Help>FAQ Page or Help>
Web Pages.