The Main Window of Vault is divided into three panes: the Folder Tree, the File List and a third pane with three tabs, Pending Change Sets, Messages and Search. The Window also has a Status Bar.
When Vault is opened, you must choose a Vault Server and then a repository within that server to connect to. The Repository Name and the Vault Server Name are then displayed in the title bar.
The main window has a menu bar with the following menus: File, Edit, View, Source, Tools and Help.