Paragraph/layout.html">Paragraph.layout</a> method.</p></li><li>
<p><code>fontFamily</code>: The name of the font family to apply when painting the text,
in the absence of a <code>textStyle</code> being attached to the span.</p></li><li>
<p><code>fontSize</code>: The fallback size of glyphs (in logical pixels) to
use when painting the text. This is used when there is no <a href="dart-ui/TextStyle-class.html">TextStyle</a>.</p></li><li>
<p><code>height</code>: The height of the spans as a multiplier of the f