Originally Posted by llasram
Pedantry note: if you're writing the HTML you're using yourself, you should avoid the use of symbolic character entity references. They're only technically valid if the referencing document uses a DOCTYPE declaration to specify a DTD which defines them. Doing that means that the document is only technically valid if it exactly conforms to the DTD. That in turn requires not using any attributes or elements not explicitly allowed by the DTD, such as any SVG or OPS 2 inline XML islands.
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