Parenteser som inleds med "left" respektive "right "anpassas dock alltid till argumentet, jfr "left(left(left(a right)right)right)", "left(stack{a#b#c}right)", "left(a over b right)". ###>See also "left(left(left(a right)right)right)", "left(stack{a#b#c}right)", "left(a over b right)."