+ if (features.runparams().isLaTeX())
+ features.require("amsmath");
+ else if (features.runparams().math_flavor == OutputParams::MathAsHTML)
+ features.addPreambleSnippet("<style type=\"text/css\">\n"
+ "span.underset{display: inline-block; vertical-align: top; text-align:center;}\n"
+ "span.underset span {display: block;}\n"
+ "span.bottom{font-size: 66%;}\n"
+ "</style>");
+