MathCol

Stack math elements vertically, with an explicit gap and horizontal alignment. The complete column is one atom, centered on its own math axis.

Use MathArray for shared columns, row baselines, and table rules, or aligned equations for TeX multiline environments.

Property	Default	Meaning
children	Empty	Elements or TeX strings.
gap	em(0)	Nonnegative vertical spacing.
justify	"center"	Horizontal start, center, end, or fractional alignment.
axis	Half the height	Optional axis position measured from the top.
klass / left / right	"mord"	Classes exposed by the complete column.

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.