Does the Korean language "romanize" their language?

Question:

Someone told me that the Korean language doesn't "romanize" their language. Is this true? In all honesty, I don't even know what that really means. I typed "Aniyo" which I thought was a way to spell, "No" in Korean and that the "official" way is "아니오". I guess I was wrong.
Is this true?

Answer:

Korean is normally written in Hangul, the Korean alphabet : 아니오 . There are several systems for representing the Korean language using the Latin alphabet, like Revised Romanization, McCune-Reischauer or Yale, but there is no standard system yet like Pinyin in Mandarin Chinese or romaji in Japanese.