        </mfenced>
                        <mo>+</mo>
                        <mi mathvariant="italic">y</mi>
                    </mrow>
                </mrow>
            </math>
        </div>
        <p>
        </p>
        <p>
            Viewport width and height are silently clamped
            to a range that depends on the implementation.
            To query this range, call <a class="citerefentry" href="glGet"><span class="citerefentry"><span class="refentrytitle">glGet</span></span></a> with a