What way is need to use or not to use the HTML ASCII

https://ascii.cl/htmlcodes.htm

Like for a plus char? From keyboard or from ASCII table? Whitch case?

Thank you.

either one would work
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Like ChrisCline1138 already said, either works always, i wanted only to mention, that encoding is mostly used to prevent xss, for example it is a good praktice to encode all special charaters in blogs or other situation, where user types something, that will be rendered on the page

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