This tag behaves the same way as the [MM_Form_Section] tag. It is used when you want to nest one section within another:



[MM_Form_Section type='shippingInfo']
    [MM_Form_Subsection type='shippingAddress']
        ...
    [/MM_Form_Subsection]
    
    ...
[/MM_Form_Section]



See the [MM_Form_Section] documentation for details.