<script>
  function PESlim(checkbox) {
    let PESlim = document.querySelector("#PESlim");
    if (checkbox.checked == false) {
      PESlim.style.display = "none";
    } else {
      PESlim.style.display = "block";
    }
  }
</script>

<legend>²¹¶¡</legend>
<label>
  <input
    type="checkbox"
    name="Edgeless.patch_vc"
    class="opt_item"
    checked
  />
  Visual C++ 9²¹¶¡
</label><br/>

<!-- <label>
  <input
    type="checkbox"
    name="Edgeless.patch_mklink"
    class="opt_item"
    checked