Strength of Evidence:
Document Type: Guideline
Provide glosses to help users select correct links.
'Glosses' are short phrases of information that pop up when a user places his or her mouse pointer over a link. A 'gloss' provides a preview of the type of information that will be found behind a link. Users prefer the preview information to be located close to the link, but not placed such that it gets in the way of reading the link. A gloss can be created by defining the Title attribute for a link. However, designers should not rely on the 'gloss' to compensate for poorly labeled links.
When a user places his or her mouse pointer over one of these links ('Food', 'Drugs', 'Medical Devices', etc.), a 'gloss' appears to the right that provides information about the content contained under that particular link.
When a user places his or her mouse pointer over the 'Form W-9' link, a 'gloss' appears below and to the right of the link, showing the full name of the form to help users verify whether this is the form they want.
Related Usability Guidelines: