Hello! Zope-dev is for the development of Zope, not the development with zope, so I send this to the Zope2zope.org list instead, where these questions should be asked and answered!

From: "박 재성" <bigarea@korea.com> There is the display() class in the BBSExpert.py. I want to call this class (display() is located in the BBSExpert.py)

If you create a BBSExpert object in the root of the webserver you can just attach 'display' to the end of the URL: http://localhost:8080/BBSExpert/display If you want to call it from DTML you use <dtml-var "BBSExpert.display()">