type, such as the number v-type.
    </p>
<p>
      In all respects once we define our subtype and provide those definitions in
      a header file, our user-defined subtype acts like any other v-type in our system.
      Since VMD functionality is largely based on being able to recognize the type
      of data in macro input being able to define another 'type', as an identifier
      subtype, which VMD understands has value for the macro programmer.
    </p>
<h4>
<a name="variadic_macro_data.vmd_identifier