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1 /* courtesy Ian Darwin and Geoff Collyer, Softquad Inc. */
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2 digraph unix {
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3 size="6,6";
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4 "5th Edition" -> "6th Edition";
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5 "5th Edition" -> "PWB 1.0";
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6 "6th Edition" -> "LSX";
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7 "6th Edition" -> "1 BSD";
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8 "6th Edition" -> "Mini Unix";
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9 "6th Edition" -> "Wollongong";
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10 "6th Edition" -> "Interdata";
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11 "Interdata" -> "Unix/TS 3.0";
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12 "Interdata" -> "PWB 2.0";
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13 "Interdata" -> "7th Edition";
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14 "7th Edition" -> "8th Edition";
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15 "7th Edition" -> "32V";
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16 "7th Edition" -> "V7M";
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17 "7th Edition" -> "Ultrix-11";
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18 "7th Edition" -> "Xenix";
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19 "7th Edition" -> "UniPlus+";
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20 "V7M" -> "Ultrix-11";
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21 "8th Edition" -> "9th Edition";
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22 "1 BSD" -> "2 BSD";
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23 "2 BSD" -> "2.8 BSD";
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24 "2.8 BSD" -> "Ultrix-11";
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25 "2.8 BSD" -> "2.9 BSD";
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26 "32V" -> "3 BSD";
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27 "3 BSD" -> "4 BSD";
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28 "4 BSD" -> "4.1 BSD";
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29 "4.1 BSD" -> "4.2 BSD";
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30 "4.1 BSD" -> "2.8 BSD";
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31 "4.1 BSD" -> "8th Edition";
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32 "4.2 BSD" -> "4.3 BSD";
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33 "4.2 BSD" -> "Ultrix-32";
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34 "PWB 1.0" -> "PWB 1.2";
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35 "PWB 1.0" -> "USG 1.0";
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36 "PWB 1.2" -> "PWB 2.0";
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37 "USG 1.0" -> "CB Unix 1";
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38 "USG 1.0" -> "USG 2.0";
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39 "CB Unix 1" -> "CB Unix 2";
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40 "CB Unix 2" -> "CB Unix 3";
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41 "CB Unix 3" -> "Unix/TS++";
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42 "CB Unix 3" -> "PDP-11 Sys V";
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43 "USG 2.0" -> "USG 3.0";
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44 "USG 3.0" -> "Unix/TS 3.0";
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45 "PWB 2.0" -> "Unix/TS 3.0";
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46 "Unix/TS 1.0" -> "Unix/TS 3.0";
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47 "Unix/TS 3.0" -> "TS 4.0";
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48 "Unix/TS++" -> "TS 4.0";
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49 "CB Unix 3" -> "TS 4.0";
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50 "TS 4.0" -> "System V.0";
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51 "System V.0" -> "System V.2";
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52 "System V.2" -> "System V.3";
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53 }
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