Function: Ajax handler for retrieving menu meta boxes.

Function: Ajax handler for internal linking.

Function: Ajax handler for menu locations save.

Function: Ajax handler for saving the meta box order.

Function: Ajax handler for menu quick searching.

Function: Ajax handler to retrieve a permalink.

Function: Ajax handler to retrieve a sample permalink.

Function: Ajax handler for Quick Edit saving a post from a list table.

Function: Ajax handler for adding a user.

Function: Ajax handler for closed post boxes.