@view_config(renderer='templates/form.pt', name='nonrequired_number_fields')
    @demonstrate('Non-Required Number Fields')
    def nonrequired_number_fields(self):
        class Schema(colander.Schema):
            required = colander.SchemaNode(
                colander.Int(),
                description='Required Field'
                )
            notrequired = colander.SchemaNode(
                colander.Float(),
                missing=0,
                description='Unrequired Field')
        schema = Schema()
        form = deform.Form(schema, buttons=('submit',))
        return self.render_form(form)