How can I create a new method in the hierarchy browser ? I haven't figured
It is very easy, but seems to be hard for first-time users to guess.
Go to any method, and just replace the text. Double-click at the beginning or end of the method and all the text will be selected, then you can just type over it. When you "accept" a method and the name is different from the previous name, the browser will create a new method rather than replace the old one. In fact, it is harder than you might think to change the name of a method. You can't change a method's name or delete it by just typing over the method definition. You have to use a menu item.
In most browsers, if no method is selected then the browser displays a template for a method. You can create a new method by typing over this template and accepting it.
-Ralph Johnson