In contrast, a character entity reference refers to a character by the name of an entity which has the desired character as its replacement text. The hhhh may mix uppercase and lowercase, though uppercase is the usual style. The nnnn or hhhh may be any number of digits and may include leading zeros. The x must be lowercase in XML documents. Where nnnn is the code point in decimal form, and hhhh is the code point in hexadecimal form. A numeric character reference refers to a character by its Universal Character Set/ Unicode code point, and a character entity reference refers to a character by a predefined name.Ī numeric character reference uses the format HTML and XML provide ways to reference Unicode characters when the characters themselves either cannot or should not be used.
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