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be represented by glyphs in the widely available Adobe Symbol font, including
Greek characters, various bracketing symbols, and a selection of mathematical
operators such as gradient, product, and summation symbols.</p>

<p>To support these entities, user agents may support full <a rel="biblioentry" href="http://www.w3.org/TR/html4/references.html#ref-ISO10646" class="normref">[ISO10646]</a> or use
other means. Display of glyphs for these characters may be obtained by being
able to display the relevant <a