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  1. or download this
    $cmd = "a_cmd -with a -lot of -arguments that"
 . "-spill over_eighty characters";
`$cmd`;
  2. or download this
    `a_cmd -with a -lot of -arguments that
 -spill over_eighty characters`;
  3. or download this
    # newline between "that" and "-spill" is stripped out
# before "a_cmd" is run. The command string can be
# split up to fit the screen.
qx/a_cmd -with a -lot of -arguments that
-spill over_eighty characters/x;