You can launch a browser to preview link diagram items and see how they will appear to the user. For example, if a link to an expanded item in your diagram leads to an HTML page, you can preview that page in your browser to see how it currently appears.
To preview a item in a browser
The item will appear inside your default browser.
If you do not want to preview the item in the default browser, you can specify a different browser.
To preview items in a specific browser
The Browse With dialog box appears.