MathSpan

A literal glyph run measured from font outlines. It does not parse TeX or add atom spacing.

Property	Default	Meaning
children	""	Literal string or number content.
font_family	"KaTeX_Main"	Exact font face; inherited KaTeX families are respected.
center	false	Center the ink on the math axis instead of using the font baseline.
skew	Font correction	Override character accent skew, in em.
klass / left / right	"mord"	Atom classes exposed to the containing math row.

Common font, color, and sizing properties follow Gum units. Math preserves separate logical advance, outline ink, baseline, and math-axis guides. See math authoring for supported TeX and font setup.