Say you have custom menus enabled with your WP theme. Is there any action associated with saving a menu once you've arranged it accordingly? To further clarify: say you've arranged a menu with some links and some posts, how might you get the titles of the posts in said menu upon saving (clicking the "Save Menu" button)?
There is no dedicated action for your needs, but you can misuse the
Sample code for a start:
At least in 3.4.1, there is an action for that: wp_update_nav_menu
Then you can get the items in your menu with something like: