link-text: An optional string value that specifies the text that appears as a clickable link in the cell. If link-text is omitted, url is used as link-text.
Examples
=HYPERLINK("http://www.apple.com", "Apple") creates a link with the text Apple that, when clicked, opens the default web browser to the Apple homepage.
=HYPERLINK("mailto:[email protected]?subject=Quote Request", "Get Quote") creates a link with the text Get Quote that, when clicked, opens the default email application and addresses a new message to [email protected] with the subject line Quote Request.