value as the "name" of each object. By default, for positional argument
actions, the dest_ value is used directly, and for optional argument actions,
the dest_ value is uppercased. So, a single positional argument with
-``dest='bar'`` will that argument will be referred to as ``bar``. A single
+``dest='bar'`` will be referred to as ``bar``. A single
optional argument ``--foo`` that should be followed by a single command-line argument
will be referred to as ``FOO``. An example::