I have recently started looking into the drupal menu system. I am not able to understand the difference between a
router_path and the
link_path. Both point to the same location in my installation.
Pro Drupal Development, Second Edition describes them as:
menu_links.link_pathis the Drupal path or external path this link points to.
menu_links.router_pathis for links corresponding to a Drupal path (0 means external), this connects the link to a