stack-data-structure public under abstract-data-type 12, data-structure 84, device 1203 List Picture As a command %3 n0 stack-data-structure n4 call-stack n0->n4 n5 push-down-queue n0->n5 n1 abstract-data-type n1->n0 n2 data-structure n2->n0 n3 device n3->n0