Things you may want to note:
RADIO) are one-of-many input
     elements.  The "many" is all radio buttons in the form with the
     same NAME.
RADIO is the same as
     CHECKBOX.
NAME) can be in a single form.  This may require
     careful document/interface design to keep things obvious -- don't
     intermix radio buttons of different NAME values, or
     the user won't understand how the interface works.