[Zope] Binding Variables

May some one give me a light about binding Variables in Zope? Inside a python script, when should i use context.xxx or container.xxx ? On the zope book, page 136 there is: Context The Context binding defaults to the name context. This variable refers to the object that the script is called on. Ok! So if i call a python script inside a DTML Method, the context is the DTML method, if i call the script directly by its URL the context would be the directory, right? Sorry, if it sounds to basic, but since i am a beginner i am really confused. Thanks a lot for your time and cooperation. -- A billion here, a couple of billion there -- first thing you know it adds up to be real money. -- Senator Everett McKinley Dirksen