>,
                    <code class="constant">GL_PACK_SKIP_ROWS</code>,
                    <code class="constant">GL_PACK_SKIP_IMAGES</code>, and
                    <code class="constant">GL_PACK_ALIGNMENT</code>.
                    Six more affect the unpacking of pixel data <span class="emphasis"><em>from</em></span> memory:
                    <code class="constant">GL_UNPACK_SWAP_BYTES</code>,
                    <code class="constant">GL_UNPACK_LSB_FIRST</code>,
                    <code class="cons