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A numeric character reference expanded to carriage return.

carriage return
numeric character reference

According to the HTML specification, text must not contain control characters other than space characters.

In particular, the control character escapes the Unicode control character “CARRIAGE RETURN” are not allowed.

An alternative is using the character reference 
 which escapes the Unicode control character “LINE FEED” that is defined to be a space character, so it’s allowed in HTML text.

Learn more:

Stack Overflow: A numeric character reference expanded to carriage return
W3C: Character references