Introduction - If you have any usage issues, please Google them yourself
In addition to component ordering and size, the pixel storage modes provide some
additional control over the layout of images in memory, including the ability to address a
subrectangle within a memory image. Figure 4.7 shows the layout of an image in memory
and the effect of the alignment and spacing parameters. Additional parameters facilitate
portability between different platforms: byte swapping within individual component
representations and bit ordering for bitmaps.