 <strong>foo</strong>)

BOOST_PARAMETER_FUNCTION(
  (int), f,
  <strong>keywords</strong>, (required (<strong>foo</strong>, *)))
{
    return <strong>foo</strong> + 1;
}

int x = f(<strong>pass_foo</strong> = 41);
</pre>
<!-- @example.prepend('#include <boost/parameter.hpp>') -->
<!-- @example.append('''
int main()
{}''') -->
<!-- @test('run') -->
<p>Before you use this more verbose form, however, please read the
section on <a class="reference internal" href="#keyword-naming">best practices for keyword obje