digraph "indexed-fs" {
  node [shape=record];

  subgraph cluster_file1 {
    graph [label="file1.txt", fontname="monospace"]
    file1 [label="<ind1> Index | { <f1i1> Block 1 | <f1i2> Block 2 | <f1i3> Block 3 }"];
    f1block3 [label="r sit"];
    f1block2 [label="sum dolo"];
    f1block1 [label="Lorem ip"];

    file1:f1i3 -> f1block3
    file1:f1i2 -> f1block2
    file1:f1i1 -> f1block1
  }

  subgraph cluster_file2 {
    graph [label="file2.exe", fontname="monospace", rankdir=LR]
    file2 [label="<ind1> Index | {<f2i1> Indirect 1 | <f2i2> Indirect 2 | <f2i3> Indirect 3}"];

    file2:f2i3:e -> ind3:f2i3:n
    file2:f2i2:e -> ind2:f2i2:n
    file2:f2i1:e -> ind1:f2i1:n
    subgraph indirect3 {
      ind3 [label="<f2i3> Indirect 3 | {<f2i3b1> Block 1 }"];
      f2block7 [label="0000 0000 4000 3800"];
      ind3:f2i3b1:e -> f2block7:n;
    }
    subgraph indirect2 {
      ind2 [label="<f2i2> Indirect 2 | {<f2i2b1> Block 1 | <f2i2b2> Block 2 | <f2i2b3> Block 3}"];
      f2block6 [label="a0f6 1000 0000 0000"];
      f2block5 [label="4000 0000 0000 0000"];
      f2block4 [label="2015 0300 0000 0000"];
      ind2:f2i2b1:e -> f2block4:n;
      ind2:f2i2b2:e -> f2block5:n;
      ind2:f2i2b3:e -> f2block6:n;
    }
    subgraph indirect1 {
      ind1 [label="<f2i1> Indirect 1 | {<f2i1b1> Block 1 | <f2i1b2> Block 2 | <f2i1b3> Block 3}"];
      f2block3 [label="0300 3e00 0100 0000"];
      f2block2 [label="0000 0000 0000 0000"];
      f2block1 [label="7f45 4c46 0201 0100"];
      ind1:f2i1b1:e -> f2block1:n;
      ind1:f2i1b2:e -> f2block2:n;
      ind1:f2i1b3:e -> f2block3:n;
    }
  }

  subgraph cluster_dir {
    label="directory"
    dfile1:ind:c -> file1:ind1
    dfile2:ind:c -> file2:ind1
    dfile1 [label="file1.txt | <ind> •", fontname="monospace"]
    dfile2 [label="file2.exe | <ind> •", fontname="monospace"]
  }

}