oc/refmanual/random-access-sequence.html">
    <code>MPL Random Access Sequence</code></a>) of index specifiers. For
    syntactic convenience, the
    <a href="indices.html#indexed_by"><code>indexed_by</code></a>
    MPL sequence can be used.
  </li>
  <li><code>Allocator</code> must be an allocator of <code>Value</code> objects
    satisfying the associated C++ requirements at <b>[allocator.requirements]</b>.
    The following relaxations to the standard requirements are allowed:
    <ul>
      <li>Non-eq