demo1        memuse  Simple test cases (with fancy printing).
demo2        memuse  Arithmetic (with fancy printing).
demo3        memuse  The howbig() and howmany() methods (with fancy printing).
demo1_plain  memuse  Same as demo1 (without fancy printing).
demo2_plain  memuse  Same as demo2 (without fancy printing).
demo3_plain  memuse  Same as demo3 (without fancy printing).
