 writing modes.

<p>While invesitigating the specification for developing test suite, test authors found the need for a new font specifically designed to test the property. This document gives a fairly basic guide to CSS testing and testing <code>text-combine-upright</code> specifically, and lists the requiremnts of the font needed to test the property.
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<h2>CSS testing terminology</h2>
<p>Before getting into the requirements of fonts, let me explain some terms specific to CSS testing.
