an class="Keyword">tuple</span><span class="Other">[</span><span class="Identifier">fp</span><span class="Other">:</span> <span class="Identifier">T</span><span class="Other">,</span> <span class="Identifier">buf</span><span class="Other">:</span> <span class="Identifier">string</span><span class="Other">,</span> <span class="Identifier">st</span><span class="Other">,</span> <span class="Identifier">en</span><span class="Other">,</span> <span class="Identifier">sz</span><span class="Other">:</span> <span cl