라고 쓰다

it says; write it as

Half these lines are 라고 써 있다, the phrase for reading a sign or a label: 꼭 코코넛 롱이라고 써있는 거 구매하셔야 돼요 'make sure you buy the one that says coconut long', '특가'나 '세일'이라고 써 있어. Note that Korean says the words 'are written' where English says the sign 'says'. The active use is ordinary writing: 내가 직업란에 영화감독이라고 썼거든 'I put film director in the occupation box.'