HTML Checking for Large Sites

Rocket Validator automatically checks your pages on the W3C Validator.

A numeric character reference expanded to carriage return.

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.

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