how to set default (root) application

There are many ways to do it:

• call you app "init"
• If there is no app "init" the "examples" is the default
• You can create routes.py as discussed here http://mdp.cti.depaul.edu/AlterEgo/default/show/67
• If you run web2py behind apache with modproxy or modrewrite you can configure apache to do so as in http://mdp.cti.depaul.edu/AlterEgo/default/show/38