The Preferences dialog box's Quick Tag Editor category configures the Quick Tag Editor (see Chapter 7).
If enabled, this option applies changes you have made to your document with the Quick Tag Editor when using the Tab key to cycle between elements.
If enabled, a pop-up list of attributes for the current HTML tag appears when you type a space after the closing " of any attribute. To select from this list, double-click on the available option.
When Enable Tag Hints is enabled, this slider controls the delay before the Quick Tag Editor appears.