Fieldset
A Fieldset is used to provide contextual information around a group of form controls in a web form.
Usage
A Fieldset is used to group several form elements, mostly Radio buttons and Checkboxes within a web form.
Anatomy
A. Label
The text label associated with the Fieldset.
B. Optional label
Indicates if the input is optional.
C. Action
Mostly a link that can refer more information on the subject.
D. Message
Give additional information to the user.
E. Fieldset elements
The grouping of multiple form elements.