הלכה על פסחים 10:4

What differentiates this night from all [other] nights? On all other nights we don't dip even once; but tonight twice. On all other nights we eat chamets and matsa; but tonight it is all matsa. On all other nights we eat other vegetables; but tonight it is all bitter herbs. On all other nights we eat whether sitting or reclining; but tonight we are all reclining