In computing, tabbing navigation is the ability to navigate between focusable elements (such as hyperlinks and form controls) within a structured document or user interface (such as HTML) with the tab key of a computer keyboard.
Also, the TabStop property (in Visual Studio) can be set to false to prevent a control from receiving the focus.
On web pages, by default, tabbing navigates through form fields (such as text entry) and anchors (such as links) in the order they appear in the character stream (i.e., in the raw HTML).
At the client end, OS X defaults to only focusing text boxes and lists, but this setting can be overridden to allow navigation to all entries (see references).
Mozilla Firefox can similarly be customized to include or exclude navigation to text areas, other form elements, and anchors.