Is there a standard way with optparse to include a blurb of text after
the usage section, description, and the list of options? This is
often useful to include examples or closing comments when the help
message is printed out. Many of the GNU commands do this.
It would look something like this:
% program --help
usage: program [options]
This is my description text.
options:
-f BAR, --foo=BAR
A sample option
--version show program's version number and exit
--help show this help message and exit
==> Now how about closing text after the options list?
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