  If true,
                        bits are ordered within a byte from least significant to most significant;
                        otherwise,
                        the first bit in each byte is the most significant one.
                        This is relevant only for bitmap data.
                    </p></dd><dt><span class="term"><code class="constant">GL_UNPACK_ROW_LENGTH</code></span></dt><dd><p>
                        If greater than 0,
                        <code class="constant">GL_UNPACK_RO