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<p>In contrast, in the syntactic grammar, a contiguous run of fixed-width code points is a single terminal symbol.</p>
<p>Terminal symbols come in two other forms:</p>
<ul>
<li>In the lexical and RegExp grammars, Unicode code points without a conventional printed representation are instead shown in the form "<U+0000 (NULL)>" where `0000` is 4 to 6 hexits representing the code point in hexadecimal notation and `NULL` is the code point name.</li>
<li>In the syntactic grammar, certain terminal symbols (e.g. |IdentifierName| and |RegularExpressionLiteral|) are shown in italics, as they refer to the nonterminals of the same name in the lexical grammar.</li>