Each successive World is progressively further removed from Divine revelation, a metaphorically smaller, more constricted circle. Emanation in each World proceeds down the 10 sefirot, with the last sefirah (Malchut-Actualisation of the Divine plan) of one World becoming, and being shared as, the first sefirah (Keter-The Divine Will) of the next, lower realm. The vertical line into the centre of the circle represents the path of downward emanation and constriction, from the initial first Ohr (light) of the "Kav" (Ray) in Lurianic doctrine.