| In DTD | |
| Text from specification | |
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Parameter entity references may only appear in the DTD. |
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| Explanation | |
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This constraint is self-evident because the % character has no significance outside of the DTD. Therefore, it is perfectly legal to have an element like this in your document: <ok>%noproblem;</ok> The text %noproblem; is passed on by the parser without generating an error. |
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