 text horizontally and make the resulting compression rendered upright, even when the element has just one character.
<p>If the element contains two or more characters, Ahem can be used to check if user agents support composition effect. However, if it is just a single character, Ahem cannot be used since most character in Ahem is a 1em square and thus cannot figure out whether the resulting coposition is rendered upright or not.
<p>Therefore, we need two glyphs where:
<ul>
<li>their widths and heights are 