PACK_SKIP_PIXELS</code> to
                        <math overflow="scroll"><mi mathvariant="italic">i</mi></math>
                        is equivalent to incrementing
                        the pointer by
                        <math overflow="scroll">

                            <mrow>
                                <mi mathvariant="italic">i</mi>
                                <mo>⁢</mo>
                                <mi mathvariant="italic">n</mi>
                            </mrow>
           