digraph g {
graph [rankdir = "LR"];
node [fontsize = "12" shape = "record"];
edge [arrowhead = "normal"];

node1 [label = "<f1> 0 | <f2> 0xb66050 | <f3> 300 | <f4> START | <f5> NULL" shape=record];
memory [label = "<f1> free}"];
node1:f2->memory:f1;
}