al_get_next_config_entry - Allegro 5 API

       Returns the next key for the iterator obtained by al_get_first_config_entry(3alleg5).  The iterator works
       like the one for al_get_next_config_section(3alleg5).

Allegro reference manual                                                       al_get_next_config_entry(3alleg5)

       al_get_next_config_entry - Allegro 5 API

              #include <allegro5/allegro.h>

              char const *al_get_next_config_entry(ALLEGRO_CONFIG_ENTRY **iterator)