_iconButton

Displays a button showing an icon, that goes to a linked page when you press it. -- Function
LINK -> _iconButton(ICON, TOOLTIP) DEPRECATED: use _linkButton instead.
_iconButton receives a Link or External Link, and displays that link as a button. The first parameter identifies the icon to use for the button; the second is the hover text to display as a tooltip. Both parameters are required.
For icons, you may use anything from the Bootstrap Glyphicon set. Just use the name of the icon (in double-double quotes) in the parameter.