x">glyph_index</td><td class="desc">
<p>Index of relevant glyph.</p>
</td></tr>
<tr><td class="val" id="vertical">vertical</td><td class="desc">
<p>If true, return vertical metrics.</p>
</td></tr>
<tr><td class="val" id="ametrics">ametrics</td><td class="desc">
<p>This parameter is used for both input and output. The original glyph metrics, if any, in font units. If metrics are not available all the values must be set to zero.</p>
</td></tr>
</table>

<h4>output</h4>

<table class="fields">
<tr><td class="v