For lab three when I right click the actor class and select documentation the class documentation does not open. Can anyone help me, or tell me what to do to fix it?
This documentation should have been saved on your computer when installing Greenfoot.
Right-click on Greenfoot, click 'open file path' (or however this is called in english), then 'doc', 'API', 'greenfoot', 'Actor.html'.
Or you open this website and select 'Actor', it is quite similar.