Editing Bindings from a Page
When you have a page open in the visual editor, the Bindings tab displays the bindings from its page definition file. Edits that you make on this tab are to the page definition file, not the page; that is, you are editing only the data bindings. Parameters that are available in the page definition file are not displayed on the Bindings tab for the page. On the Bindings tab of the page there is a link that you can click to open the page definition file editor.