pan> <span class="special">&gt;</span><span class="special">,</span> <span class="identifier">X</span> <span class="special">&gt;</span><span class="special">,</span> <span class="identifier">quantity</span><span class="special">&lt;</span> <span class="identifier">unit</span><span class="special">&lt;</span> <span class="identifier">Dim</span><span class="special">,</span> <span class="identifier">System</span> <span class="special">&gt;</span><span class="special">,</span> <span class="identifier">Y</span