立つ鳥跡を濁さず たつとりあとをにごさず it is simply common courtesy to clean up after yourself; a bird does not foul the nest it is about to leave; on leaving a place one should see that all is in good order exp proverb Advanced ➥
筆跡 ひっせき ふであと handwriting n adj-no calligraphy specimen; example of penmanship; holograph n Advanced ➥