tion</a></li></ol></li></ol></li></ol></div></div><div id="spec-container"><h1 class="version first">Stage 1 Draft / June 24, 2020</h1><h1 class="title">Slice notation</h1>

<emu-clause id="sec-well-known-symbols">
  <h1><span class="secnum">1</span> Well-Known Symbols</h1>
  <p>Well-known symbols are built-in Symbol values that are explicitly referenced by algorithms of this specification. They are typically used as the keys of properties whose values serve as extension points of a specification algorithm.