You can preview and edit dynamic content using the Live Data window.
While dynamic content is displayed, you can perform the following tasks:
Adjust the page’s layout using the page-design tools
Add, edit, or delete dynamic content
Add, edit, or delete server behaviors
To achieve this effect, Dreamweaver runs the dynamic page on your server before displaying it in the Live Data window. Whenever you switch to the Live Data window, a temporary copy of the open document is sent to your application server for processing. The resulting page is returned and displayed in the Live Data window, and the temporary copy on the server is deleted.
You can toggle between the Document window and the Live Data window (View > Live Data). If a page expects data from the user—for example, the ID number of a record selected in a master page—you can provide the page with that data yourself in the Live Data Settings dialog box.