BuddyPress.org

to be fair to the OP, i think the buddypress admin bar documentation is quite difficult to follow. i imagine that it would be even more difficult for anyone whose first language is not english.

(for example: “To change a function that is triggered by an action you have to unhook the current function that responds to the action and supply your own function that replaces the core function and then replace the add_action() call with one that responds to the same hook as the original function.”…)