Where the openlayer_plus code comes from?

Thanks for the prompt reply batje.

The main difference I see is in the behaviors php code, d7 branch on developmentseed does stuff like:

 /**
   * Override of options_form().
   */
  function options_form($defaults = array()) {
    $form = parent::options_form($defaults);
    $form['positioned'] = array(
      '#type' => 'checkbox',
      '#title' => t('Position tooltip over feature'),
      '#default_value' => $this->options['positioned'],
    );
    return $form;
  }

while you are doing:

 /**
   * Override of options_form().
   */
  function options_form($defaults) {
    return array(
      'positioned' => array(
        '#type' => 'checkbox',
        '#title' => t('Position tooltip over feature'),
        '#default_value' => isset($defaults['positioned']) ? $defaults['positioned'] : array(),
      ),
    );
  }

The two things are almost the same, at first I was wondering if the $form = parent::options_form($defaults); was a more correct way of doing it, but then I saw that the OpenLayers module itself does just like you are doing it, so maybe that's the way to go.

Other differences involve indenting style in the javascript files, not a big deal, I'd just say: let's be consistent with the OpenLayers module on those too.