The blitter takes care of almost all of the Amiga's
         bitmapped graphics manipulation, from drawing lines
         to moving objects and filling outlined areas.
         Intuition, for example, uses the blitter for such
         things as drawing gadgets and printing text.  And
         one of the best things about the blitter is that it
         executes independently, allowing the Amiga to
         animate objects while the CPU is hard at work
         executing program instructions.

Using blitter for copying memory Using blitter for filling areas Using blitter for line drawing General guidelines
Interesting links: