The left frame has a fixed menu bar for instant access to commands. The right frame has the status and management interaction. This keeps the menu in the right place. This avoids a common problem where clicking Reload returns to the homepage of the application. It also allows users to bookmark pages, which can't be done without unique URLs.
Careful design ensures that no command is more than two clicks away.
Context-sensitive help, including an index. Users look up settings and commands in the index then click to go right to the page where it is used. Print Wizard has an index and context-sensitive help. The Index has a complete list of settings used in printer management. Instead of page numbers, there are links to pages where values are set.