_xref31">must</a>
            not contain any literal
            <a href="terminology.html#space" id="space_xref21">space characters</a>
</li>
            <li>
<a href="terminology.html#must-requirement" id="must-requirement_xref32">must</a>
            not contain any
            "<code title="U+0022 QUOTATION MARK">"</code>",
            "<code title="U+0027 APOSTROPHE">'</code>",
            "<code title="U+003E GREATER-THAN SIGN">&gt;</code>",
            "<code title="U+003D EQUALS SIGN">=</code>",
  