<TeXmacs|1.0.7.9>

<style|generic>

<\body>
  <\hide-preamble>
    <assign|solution-text|<macro|<localize|Solution>>>

    <assign|render-solution|<\macro|which|body>
      <\render-remark|<arg|which>>
        <\surround||<htab|0.5fn><active*|<with|mode|math|\<box\>>>>
          <arg|body>
        </surround>
      </render-remark>
    </macro>>

    <assign|solution|<\macro|body>
      <render-solution|<solution-text>|<arg|body>>
    </macro>>
  </hide-preamble>

  <\solution>
    This is the solution.
  </solution>
</body>

<\initial>
  <\collection>
    <associate|language|british>
    <associate|preamble|false>
  </collection>
</initial>