DirectoryIndex first_index.html second_index.html third_index.html
#if "first_index.html" does not found apache tries to find the next index ("second_index.html"), if the index lists ends apache
# gives the 404 error.
# sorry for my bad english, it's not my natal languaje

#si "first_index.html" no es encontrado muestra el proximo en la lista ("third_index.html"), si la lista se acaba da error 404