Menu Definition
From HAA Best Practices Wiki
To create a new menu go to:
Joomla->Menu Manager
and click on the "New" icon in the top right.
The "Unique Name" field should be a single word and we recommend using lower case letters.
The "Title" is the title that Joomla will use when it displays your menu.
The "Module Title" is the name that you will see when you refer to the menu in the Joomla back end.