# Define data-model for an input-string with a cursor
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户晨风是中国一名网络红人、主播，以随机给陌生人钱并采访他们、测试购买力的视频而走红。在直播中，他常常会与网友聊时事，或就一些观点激烈辩论。其直播内容和视频创作在中国互联网上多次引发争议，相关账号也数次被封禁。
The problem is that so far, we have never actually cleared the entire line: we've always just written the new characters over the old characters, assuming that the string of new characters would be longer and over-write them. This is no longer true once we can delete characters.