digraph PageHeap {
rankdir=LR
node [shape=box, width=0.3, height=0.3]
nodesep=.05

heap [shape=record, height=3, label="<f0>1 page|<f1>2 pages|<f2>3 pages|...|<f127>127 pages"]
O0 [shape=record, label=""]
O1 [shape=record, label=""]
O2 [shape=record, label="{|}"]
O3 [shape=record, label="{|}"]
O4 [shape=record, label="{||}"]
O5 [shape=record, label="{||}"]
O6 [shape=record, label="{|...|}"]
O7 [shape=record, label="{|...|}"]
sep1 [shape=plaintext, label="..."]
sep2 [shape=plaintext, label="..."]
sep3 [shape=plaintext, label="..."]
sep4 [shape=plaintext, label="..."]

heap:f0 -> O0 -> O1 -> sep1
heap:f1 -> O2 -> O3 -> sep2
heap:f2 -> O4 -> O5 -> sep3
heap:f127 -> O6 -> O7 -> sep4

}