The factorial is not scaled (example: &quot; fact stack{a#b} &quot; and &quot; fact {a over b} &quot; ) but is oriented using the baseline or centre of the arguments. Brackets always have a fixed size as well.
Le signe de factorielle n'est pas redimensionné, voir &quot; fact stack{a#b} &quot; et &quot; fact {a over b} &quot; , mais aligné à la ligne de base ou au centre de l'argument.