A tabbox is a list of blocks (panels) only one of which is displayed at a time. The currently displayed panel is controlled by a set of tabs at the top, bottom or on side of the panels.

The tabbox allows visual presentation to highlight structure, especially where content doesn't naturally flow from panel to panel.

A tabbox is implemented using

• a list of block elements (the panels) inside a container block which has a switchBox behavior applied. This is preceded by
• a list of links (the tabs) to the panels inside the container. This list has a menu behavior similar to the select element

When one of the tabs is activated, a change event is sent to the menu. The menu grabs the href of the activated tab and commands the switchBox to display referenced panel.

The tabbox implementation matches a list of skip links, where each link references the content of one of the panels