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Created May 17, 2020 20:34
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unixLayers.svg
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Generated by graphviz version 2.45.20200413.0721 (20200413.0721)
-->
<!-- Title: unix Pages: 1 -->
<svg width="432pt" height="327pt"
viewBox="0.00 0.00 432.00 327.15" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
<g id="L1" class="layer">
<g id="graph0" class="graph" transform="scale(0.39 0.39) rotate(0) translate(4 832)">
<title>unix</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-832 1099.94,-832 1099.94,4 -4,4"/>
<!-- 5th Edition -->
<g id="node1" class="node">
<title>5th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="573.5" cy="-810" rx="63.09" ry="18"/>
<text text-anchor="middle" x="573.5" y="-806.3" font-family="Times,serif" font-size="14.00">5th Edition</text>
</g>
</g>
</g>
<g id="L2" class="layer">
<g id="L2_graph0" class="graph" transform="scale(0.39 0.39) rotate(0) translate(4 832)">
<title>unix</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-832 1099.94,-832 1099.94,4 -4,4"/>
<!-- 5th Edition -->
<g id="L2_node1_L2" class="node">
<title>5th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="573.5" cy="-810" rx="63.09" ry="18"/>
<text text-anchor="middle" x="573.5" y="-806.3" font-family="Times,serif" font-size="14.00">5th Edition</text>
</g>
<!-- 6th Edition -->
<g id="L2_node2_L2" class="node">
<title>6th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="468.5" cy="-738" rx="63.09" ry="18"/>
<text text-anchor="middle" x="468.5" y="-734.3" font-family="Times,serif" font-size="14.00">6th Edition</text>
</g>
<!-- 5th Edition&#45;&gt;6th Edition -->
<g id="L2_edge1" class="edge">
<title>5th Edition&#45;&gt;6th Edition</title>
<path fill="none" stroke="black" d="M549.93,-793.29C535.44,-783.63 516.68,-771.12 500.82,-760.55"/>
<polygon fill="black" stroke="black" points="502.61,-757.53 492.35,-754.9 498.72,-763.36 502.61,-757.53"/>
</g>
<!-- PWB 1.0 -->
<g id="L2_node3_L2" class="node">
<title>PWB 1.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="748.5" cy="-738" rx="50.89" ry="18"/>
<text text-anchor="middle" x="748.5" y="-734.3" font-family="Times,serif" font-size="14.00">PWB 1.0</text>
</g>
<!-- 5th Edition&#45;&gt;PWB 1.0 -->
<g id="L2_edge2" class="edge">
<title>5th Edition&#45;&gt;PWB 1.0</title>
<path fill="none" stroke="black" d="M608.49,-795C636.84,-783.66 676.86,-767.65 706.86,-755.65"/>
<polygon fill="black" stroke="black" points="708.24,-758.87 716.22,-751.91 705.64,-752.38 708.24,-758.87"/>
</g>
</g>
</g>
<g id="L3" class="layer">
<g id="L3_graph0" class="graph" transform="scale(0.39 0.39) rotate(0) translate(4 832)">
<title>unix</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-832 1099.94,-832 1099.94,4 -4,4"/>
<!-- 5th Edition -->
<g id="L3_node1_L3" class="node">
<title>5th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="573.5" cy="-810" rx="63.09" ry="18"/>
<text text-anchor="middle" x="573.5" y="-806.3" font-family="Times,serif" font-size="14.00">5th Edition</text>
</g>
<!-- 6th Edition -->
<g id="L3_node2_L3" class="node">
<title>6th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="468.5" cy="-738" rx="63.09" ry="18"/>
<text text-anchor="middle" x="468.5" y="-734.3" font-family="Times,serif" font-size="14.00">6th Edition</text>
</g>
<!-- 5th Edition&#45;&gt;6th Edition -->
<g id="L3_edge1" class="edge">
<title>5th Edition&#45;&gt;6th Edition</title>
<path fill="none" stroke="black" d="M549.93,-793.29C535.44,-783.63 516.68,-771.12 500.82,-760.55"/>
<polygon fill="black" stroke="black" points="502.61,-757.53 492.35,-754.9 498.72,-763.36 502.61,-757.53"/>
</g>
<!-- PWB 1.0 -->
<g id="L3_node3_L3" class="node">
<title>PWB 1.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="748.5" cy="-738" rx="50.89" ry="18"/>
<text text-anchor="middle" x="748.5" y="-734.3" font-family="Times,serif" font-size="14.00">PWB 1.0</text>
</g>
<!-- 5th Edition&#45;&gt;PWB 1.0 -->
<g id="L3_edge2" class="edge">
<title>5th Edition&#45;&gt;PWB 1.0</title>
<path fill="none" stroke="black" d="M608.49,-795C636.84,-783.66 676.86,-767.65 706.86,-755.65"/>
<polygon fill="black" stroke="black" points="708.24,-758.87 716.22,-751.91 705.64,-752.38 708.24,-758.87"/>
</g>
<!-- LSX -->
<g id="L3_node4_L3" class="node">
<title>LSX</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="650.5" cy="-666" rx="29.5" ry="18"/>
<text text-anchor="middle" x="650.5" y="-662.3" font-family="Times,serif" font-size="14.00">LSX</text>
</g>
<!-- 6th Edition&#45;&gt;LSX -->
<g id="L3_edge3" class="edge">
<title>6th Edition&#45;&gt;LSX</title>
<path fill="none" stroke="black" d="M506.97,-723.64C536.13,-713.32 577.09,-698.42 612.5,-684 614.35,-683.24 616.26,-682.45 618.17,-681.64"/>
<polygon fill="black" stroke="black" points="619.92,-684.7 627.7,-677.5 617.13,-678.28 619.92,-684.7"/>
</g>
<!-- 1 BSD -->
<g id="L3_node5_L3" class="node">
<title>1 BSD</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="131.5" cy="-666" rx="40.09" ry="18"/>
<text text-anchor="middle" x="131.5" y="-662.3" font-family="Times,serif" font-size="14.00">1 BSD</text>
</g>
<!-- 6th Edition&#45;&gt;1 BSD -->
<g id="L3_edge4" class="edge">
<title>6th Edition&#45;&gt;1 BSD</title>
<path fill="none" stroke="black" d="M417.91,-727.04C365.29,-716.6 280.53,-699.58 207.5,-684 197.48,-681.86 186.74,-679.5 176.58,-677.24"/>
<polygon fill="black" stroke="black" points="177.18,-673.79 166.65,-675.02 175.65,-680.62 177.18,-673.79"/>
</g>
<!-- Mini Unix -->
<g id="L3_node6_L3" class="node">
<title>Mini Unix</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="398.5" cy="-666" rx="56.59" ry="18"/>
<text text-anchor="middle" x="398.5" y="-662.3" font-family="Times,serif" font-size="14.00">Mini Unix</text>
</g>
<!-- 6th Edition&#45;&gt;Mini Unix -->
<g id="L3_edge5" class="edge">
<title>6th Edition&#45;&gt;Mini Unix</title>
<path fill="none" stroke="black" d="M451.91,-720.41C443.02,-711.52 431.91,-700.41 422.13,-690.63"/>
<polygon fill="black" stroke="black" points="424.51,-688.07 414.97,-683.47 419.56,-693.02 424.51,-688.07"/>
</g>
<!-- Wollongong -->
<g id="L3_node7_L3" class="node">
<title>Wollongong</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="538.5" cy="-666" rx="64.99" ry="18"/>
<text text-anchor="middle" x="538.5" y="-662.3" font-family="Times,serif" font-size="14.00">Wollongong</text>
</g>
<!-- 6th Edition&#45;&gt;Wollongong -->
<g id="L3_edge6" class="edge">
<title>6th Edition&#45;&gt;Wollongong</title>
<path fill="none" stroke="black" d="M485.09,-720.41C493.98,-711.52 505.09,-700.41 514.87,-690.63"/>
<polygon fill="black" stroke="black" points="517.43,-693.02 522.03,-683.47 512.48,-688.07 517.43,-693.02"/>
</g>
<!-- Interdata -->
<g id="L3_node8_L3" class="node">
<title>Interdata</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="270.5" cy="-666" rx="53.89" ry="18"/>
<text text-anchor="middle" x="270.5" y="-662.3" font-family="Times,serif" font-size="14.00">Interdata</text>
</g>
<!-- 6th Edition&#45;&gt;Interdata -->
<g id="L3_edge7" class="edge">
<title>6th Edition&#45;&gt;Interdata</title>
<path fill="none" stroke="black" d="M430.32,-723.5C397.69,-711.97 350.68,-695.35 316.08,-683.12"/>
<polygon fill="black" stroke="black" points="316.82,-679.66 306.22,-679.63 314.49,-686.26 316.82,-679.66"/>
</g>
<!-- PWB 1.2 -->
<g id="L3_node33_L3" class="node">
<title>PWB 1.2</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="748.5" cy="-666" rx="50.89" ry="18"/>
<text text-anchor="middle" x="748.5" y="-662.3" font-family="Times,serif" font-size="14.00">PWB 1.2</text>
</g>
<!-- PWB 1.0&#45;&gt;PWB 1.2 -->
<g id="L3_edge36" class="edge">
<title>PWB 1.0&#45;&gt;PWB 1.2</title>
<path fill="none" stroke="black" d="M748.5,-719.7C748.5,-711.98 748.5,-702.71 748.5,-694.11"/>
<polygon fill="black" stroke="black" points="752,-694.1 748.5,-684.1 745,-694.1 752,-694.1"/>
</g>
<!-- USG 1.0 -->
<g id="L3_node34_L3" class="node">
<title>USG 1.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="867.5" cy="-666" rx="50.09" ry="18"/>
<text text-anchor="middle" x="867.5" y="-662.3" font-family="Times,serif" font-size="14.00">USG 1.0</text>
</g>
<!-- PWB 1.0&#45;&gt;USG 1.0 -->
<g id="L3_edge37" class="edge">
<title>PWB 1.0&#45;&gt;USG 1.0</title>
<path fill="none" stroke="black" d="M773.44,-722.33C790.98,-712.01 814.64,-698.1 833.84,-686.8"/>
<polygon fill="black" stroke="black" points="835.74,-689.74 842.58,-681.65 832.19,-683.71 835.74,-689.74"/>
</g>
</g>
</g>
<g id="L4" class="layer">
<g id="L4_graph0" class="graph" transform="scale(0.39 0.39) rotate(0) translate(4 832)">
<title>unix</title>
<polygon fill="white" stroke="transparent" points="-4,4 -4,-832 1099.94,-832 1099.94,4 -4,4"/>
<!-- 5th Edition -->
<g id="L4_node1_L4" class="node">
<title>5th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="573.5" cy="-810" rx="63.09" ry="18"/>
<text text-anchor="middle" x="573.5" y="-806.3" font-family="Times,serif" font-size="14.00">5th Edition</text>
</g>
<!-- 6th Edition -->
<g id="L4_node2_L4" class="node">
<title>6th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="468.5" cy="-738" rx="63.09" ry="18"/>
<text text-anchor="middle" x="468.5" y="-734.3" font-family="Times,serif" font-size="14.00">6th Edition</text>
</g>
<!-- 5th Edition&#45;&gt;6th Edition -->
<g id="L4_edge1" class="edge">
<title>5th Edition&#45;&gt;6th Edition</title>
<path fill="none" stroke="black" d="M549.93,-793.29C535.44,-783.63 516.68,-771.12 500.82,-760.55"/>
<polygon fill="black" stroke="black" points="502.61,-757.53 492.35,-754.9 498.72,-763.36 502.61,-757.53"/>
</g>
<!-- PWB 1.0 -->
<g id="L4_node3_L4" class="node">
<title>PWB 1.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="748.5" cy="-738" rx="50.89" ry="18"/>
<text text-anchor="middle" x="748.5" y="-734.3" font-family="Times,serif" font-size="14.00">PWB 1.0</text>
</g>
<!-- 5th Edition&#45;&gt;PWB 1.0 -->
<g id="L4_edge2" class="edge">
<title>5th Edition&#45;&gt;PWB 1.0</title>
<path fill="none" stroke="black" d="M608.49,-795C636.84,-783.66 676.86,-767.65 706.86,-755.65"/>
<polygon fill="black" stroke="black" points="708.24,-758.87 716.22,-751.91 705.64,-752.38 708.24,-758.87"/>
</g>
<!-- LSX -->
<g id="L4_node4_L4" class="node">
<title>LSX</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="650.5" cy="-666" rx="29.5" ry="18"/>
<text text-anchor="middle" x="650.5" y="-662.3" font-family="Times,serif" font-size="14.00">LSX</text>
</g>
<!-- 6th Edition&#45;&gt;LSX -->
<g id="L4_edge3" class="edge">
<title>6th Edition&#45;&gt;LSX</title>
<path fill="none" stroke="black" d="M506.97,-723.64C536.13,-713.32 577.09,-698.42 612.5,-684 614.35,-683.24 616.26,-682.45 618.17,-681.64"/>
<polygon fill="black" stroke="black" points="619.92,-684.7 627.7,-677.5 617.13,-678.28 619.92,-684.7"/>
</g>
<!-- 1 BSD -->
<g id="L4_node5_L4" class="node">
<title>1 BSD</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="131.5" cy="-666" rx="40.09" ry="18"/>
<text text-anchor="middle" x="131.5" y="-662.3" font-family="Times,serif" font-size="14.00">1 BSD</text>
</g>
<!-- 6th Edition&#45;&gt;1 BSD -->
<g id="L4_edge4" class="edge">
<title>6th Edition&#45;&gt;1 BSD</title>
<path fill="none" stroke="black" d="M417.91,-727.04C365.29,-716.6 280.53,-699.58 207.5,-684 197.48,-681.86 186.74,-679.5 176.58,-677.24"/>
<polygon fill="black" stroke="black" points="177.18,-673.79 166.65,-675.02 175.65,-680.62 177.18,-673.79"/>
</g>
<!-- Mini Unix -->
<g id="L4_node6_L4" class="node">
<title>Mini Unix</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="398.5" cy="-666" rx="56.59" ry="18"/>
<text text-anchor="middle" x="398.5" y="-662.3" font-family="Times,serif" font-size="14.00">Mini Unix</text>
</g>
<!-- 6th Edition&#45;&gt;Mini Unix -->
<g id="L4_edge5" class="edge">
<title>6th Edition&#45;&gt;Mini Unix</title>
<path fill="none" stroke="black" d="M451.91,-720.41C443.02,-711.52 431.91,-700.41 422.13,-690.63"/>
<polygon fill="black" stroke="black" points="424.51,-688.07 414.97,-683.47 419.56,-693.02 424.51,-688.07"/>
</g>
<!-- Wollongong -->
<g id="L4_node7_L4" class="node">
<title>Wollongong</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="538.5" cy="-666" rx="64.99" ry="18"/>
<text text-anchor="middle" x="538.5" y="-662.3" font-family="Times,serif" font-size="14.00">Wollongong</text>
</g>
<!-- 6th Edition&#45;&gt;Wollongong -->
<g id="L4_edge6" class="edge">
<title>6th Edition&#45;&gt;Wollongong</title>
<path fill="none" stroke="black" d="M485.09,-720.41C493.98,-711.52 505.09,-700.41 514.87,-690.63"/>
<polygon fill="black" stroke="black" points="517.43,-693.02 522.03,-683.47 512.48,-688.07 517.43,-693.02"/>
</g>
<!-- Interdata -->
<g id="L4_node8_L4" class="node">
<title>Interdata</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="270.5" cy="-666" rx="53.89" ry="18"/>
<text text-anchor="middle" x="270.5" y="-662.3" font-family="Times,serif" font-size="14.00">Interdata</text>
</g>
<!-- 6th Edition&#45;&gt;Interdata -->
<g id="L4_edge7" class="edge">
<title>6th Edition&#45;&gt;Interdata</title>
<path fill="none" stroke="black" d="M430.32,-723.5C397.69,-711.97 350.68,-695.35 316.08,-683.12"/>
<polygon fill="black" stroke="black" points="316.82,-679.66 306.22,-679.63 314.49,-686.26 316.82,-679.66"/>
</g>
<!-- PWB 1.2 -->
<g id="L4_node33_L4" class="node">
<title>PWB 1.2</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="748.5" cy="-666" rx="50.89" ry="18"/>
<text text-anchor="middle" x="748.5" y="-662.3" font-family="Times,serif" font-size="14.00">PWB 1.2</text>
</g>
<!-- PWB 1.0&#45;&gt;PWB 1.2 -->
<g id="L4_edge36" class="edge">
<title>PWB 1.0&#45;&gt;PWB 1.2</title>
<path fill="none" stroke="black" d="M748.5,-719.7C748.5,-711.98 748.5,-702.71 748.5,-694.11"/>
<polygon fill="black" stroke="black" points="752,-694.1 748.5,-684.1 745,-694.1 752,-694.1"/>
</g>
<!-- USG 1.0 -->
<g id="L4_node34_L4" class="node">
<title>USG 1.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="867.5" cy="-666" rx="50.09" ry="18"/>
<text text-anchor="middle" x="867.5" y="-662.3" font-family="Times,serif" font-size="14.00">USG 1.0</text>
</g>
<!-- PWB 1.0&#45;&gt;USG 1.0 -->
<g id="L4_edge37" class="edge">
<title>PWB 1.0&#45;&gt;USG 1.0</title>
<path fill="none" stroke="black" d="M773.44,-722.33C790.98,-712.01 814.64,-698.1 833.84,-686.8"/>
<polygon fill="black" stroke="black" points="835.74,-689.74 842.58,-681.65 832.19,-683.71 835.74,-689.74"/>
</g>
<!-- PWB 2.0 -->
<g id="L4_node10_L4" class="node">
<title>PWB 2.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="599.5" cy="-594" rx="50.89" ry="18"/>
<text text-anchor="middle" x="599.5" y="-590.3" font-family="Times,serif" font-size="14.00">PWB 2.0</text>
</g>
<!-- Interdata&#45;&gt;PWB 2.0 -->
<g id="L4_edge9" class="edge">
<title>Interdata&#45;&gt;PWB 2.0</title>
<path fill="none" stroke="black" d="M310.05,-653.58C317.48,-651.6 325.2,-649.65 332.5,-648 421.45,-627.92 445.43,-631.55 534.5,-612 539.84,-610.83 545.4,-609.51 550.93,-608.15"/>
<polygon fill="black" stroke="black" points="551.94,-611.51 560.78,-605.66 550.23,-604.72 551.94,-611.51"/>
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<!-- 7th Edition -->
<g id="L4_node11_L4" class="node">
<title>7th Edition</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="270.5" cy="-594" rx="63.09" ry="18"/>
<text text-anchor="middle" x="270.5" y="-590.3" font-family="Times,serif" font-size="14.00">7th Edition</text>
</g>
<!-- Interdata&#45;&gt;7th Edition -->
<g id="L4_edge10" class="edge">
<title>Interdata&#45;&gt;7th Edition</title>
<path fill="none" stroke="black" d="M270.5,-647.7C270.5,-639.98 270.5,-630.71 270.5,-622.11"/>
<polygon fill="black" stroke="black" points="274,-622.1 270.5,-612.1 267,-622.1 274,-622.1"/>
</g>
<!-- PWB 1.2&#45;&gt;PWB 2.0 -->
<g id="L4_edge38" class="edge">
<title>PWB 1.2&#45;&gt;PWB 2.0</title>
<path fill="none" stroke="black" d="M719.06,-651.17C695.9,-640.29 663.43,-625.03 638.17,-613.17"/>
<polygon fill="black" stroke="black" points="639.41,-609.89 628.87,-608.8 636.44,-616.22 639.41,-609.89"/>
</g>
<!-- CB Unix 1 -->
<g id="L4_node35_L4" class="node">
<title>CB Unix 1</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="901.5" cy="-594" rx="57.69" ry="18"/>
<text text-anchor="middle" x="901.5" y="-590.3" font-family="Times,serif" font-size="14.00">CB Unix 1</text>
</g>
<!-- USG 1.0&#45;&gt;CB Unix 1 -->
<g id="L4_edge39" class="edge">
<title>USG 1.0&#45;&gt;CB Unix 1</title>
<path fill="none" stroke="black" d="M875.73,-648.05C879.6,-640.09 884.3,-630.41 888.62,-621.51"/>
<polygon fill="black" stroke="black" points="891.89,-622.8 893.11,-612.28 885.59,-619.74 891.89,-622.8"/>
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<!-- USG 2.0 -->
<g id="L4_node36_L4" class="node">
<title>USG 2.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="756.5" cy="-594" rx="50.09" ry="18"/>
<text text-anchor="middle" x="756.5" y="-590.3" font-family="Times,serif" font-size="14.00">USG 2.0</text>
</g>
<!-- USG 1.0&#45;&gt;USG 2.0 -->
<g id="L4_edge40" class="edge">
<title>USG 1.0&#45;&gt;USG 2.0</title>
<path fill="none" stroke="black" d="M843.68,-649.98C827.74,-639.93 806.54,-626.56 789.04,-615.52"/>
<polygon fill="black" stroke="black" points="790.6,-612.37 780.27,-609.99 786.86,-618.29 790.6,-612.37"/>
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<title>5th Edition&#45;&gt;6th Edition</title>
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<!-- PWB 1.0 -->
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<!-- 5th Edition&#45;&gt;PWB 1.0 -->
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<title>5th Edition&#45;&gt;PWB 1.0</title>
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<!-- 6th Edition&#45;&gt;LSX -->
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<title>6th Edition&#45;&gt;LSX</title>
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<title>6th Edition&#45;&gt;Wollongong</title>
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<!-- 6th Edition&#45;&gt;Interdata -->
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<!-- USG 1.0 -->
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<!-- PWB 2.0 -->
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<!-- Unix/TS 3.0 -->
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<!-- Interdata&#45;&gt;Unix/TS 3.0 -->
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<!-- PWB 2.0 -->
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<!-- Interdata&#45;&gt;PWB 2.0 -->
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<!-- Interdata&#45;&gt;7th Edition -->
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<!-- PWB 2.0&#45;&gt;Unix/TS 3.0 -->
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<!-- V7M -->
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<!-- Xenix -->
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<!-- 32V&#45;&gt;3 BSD -->
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<!-- PWB 1.2&#45;&gt;PWB 2.0 -->
<g id="L6_edge38" class="edge">
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<!-- USG 2.0 -->
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<!-- USG 1.0&#45;&gt;USG 2.0 -->
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<!-- USG 3.0 -->
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<!-- Unix/TS 1.0 -->
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<!-- PWB 1.0 -->
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<!-- 6th Edition&#45;&gt;LSX -->
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<g id="L7_edge47" class="edge">
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<!-- 32V -->
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<title>32V</title>
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<!-- 7th Edition&#45;&gt;32V -->
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<title>7th Edition&#45;&gt;32V</title>
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<!-- V7M -->
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<!-- 7th Edition&#45;&gt;V7M -->
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<title>7th Edition&#45;&gt;V7M</title>
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<!-- Xenix -->
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<title>Xenix</title>
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<!-- 7th Edition&#45;&gt;Xenix -->
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<title>7th Edition&#45;&gt;Xenix</title>
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<!-- UniPlus+ -->
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<title>UniPlus+</title>
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<!-- 7th Edition&#45;&gt;UniPlus+ -->
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<title>7th Edition&#45;&gt;UniPlus+</title>
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<!-- 3 BSD -->
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<title>3 BSD</title>
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<title>32V&#45;&gt;3 BSD</title>
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<!-- 4 BSD -->
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<!-- PWB 1.2&#45;&gt;PWB 2.0 -->
<g id="L7_edge38" class="edge">
<title>PWB 1.2&#45;&gt;PWB 2.0</title>
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<!-- CB Unix 1 -->
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<title>CB Unix 1</title>
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<!-- USG 1.0&#45;&gt;CB Unix 1 -->
<g id="L7_edge39" class="edge">
<title>USG 1.0&#45;&gt;CB Unix 1</title>
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<!-- USG 2.0 -->
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<!-- USG 1.0&#45;&gt;USG 2.0 -->
<g id="L7_edge40" class="edge">
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<!-- CB Unix 2 -->
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<!-- USG 3.0 -->
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<!-- USG 2.0&#45;&gt;USG 3.0 -->
<g id="L7_edge45" class="edge">
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<!-- CB Unix 3 -->
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<!-- CB Unix 2&#45;&gt;CB Unix 3 -->
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<!-- Unix/TS++ -->
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<!-- PDP&#45;11 Sys V -->
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<!-- USG 3.0&#45;&gt;Unix/TS 3.0 -->
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<!-- Unix/TS 1.0 -->
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<!-- Unix/TS 1.0&#45;&gt;Unix/TS 3.0 -->
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<!-- 6th Edition -->
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<!-- 5th Edition&#45;&gt;6th Edition -->
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<!-- PWB 1.0 -->
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<!-- 5th Edition&#45;&gt;PWB 1.0 -->
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<!-- LSX -->
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<!-- 6th Edition&#45;&gt;LSX -->
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<!-- 1 BSD -->
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<!-- 6th Edition&#45;&gt;Mini Unix -->
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<!-- PWB 1.2 -->
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<!-- USG 1.0 -->
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<title>PWB 1.0&#45;&gt;USG 1.0</title>
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<polygon fill="black" stroke="black" points="835.74,-689.74 842.58,-681.65 832.19,-683.71 835.74,-689.74"/>
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<!-- 2 BSD -->
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<title>2 BSD</title>
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<!-- 1 BSD&#45;&gt;2 BSD -->
<g id="L9_edge20" class="edge">
<title>1 BSD&#45;&gt;2 BSD</title>
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<!-- Unix/TS 3.0 -->
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<!-- Interdata&#45;&gt;Unix/TS 3.0 -->
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<title>Interdata&#45;&gt;Unix/TS 3.0</title>
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<!-- PWB 2.0 -->
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<title>PWB 2.0</title>
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<text text-anchor="middle" x="599.5" y="-590.3" font-family="Times,serif" font-size="14.00">PWB 2.0</text>
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<!-- Interdata&#45;&gt;PWB 2.0 -->
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<title>Interdata&#45;&gt;PWB 2.0</title>
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<!-- 7th Edition -->
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<title>7th Edition</title>
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<!-- Interdata&#45;&gt;7th Edition -->
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<title>Interdata&#45;&gt;7th Edition</title>
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<!-- TS 4.0 -->
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<title>TS 4.0</title>
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<!-- Unix/TS 3.0&#45;&gt;TS 4.0 -->
<g id="L9_edge49" class="edge">
<title>Unix/TS 3.0&#45;&gt;TS 4.0</title>
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<!-- PWB 2.0&#45;&gt;Unix/TS 3.0 -->
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<title>PWB 2.0&#45;&gt;Unix/TS 3.0</title>
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<!-- 8th Edition -->
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<title>8th Edition</title>
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<title>7th Edition&#45;&gt;8th Edition</title>
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<!-- 32V -->
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<title>32V</title>
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<!-- 7th Edition&#45;&gt;32V -->
<g id="L9_edge12" class="edge">
<title>7th Edition&#45;&gt;32V</title>
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<!-- V7M -->
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<title>V7M</title>
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<text text-anchor="middle" x="32.5" y="-446.3" font-family="Times,serif" font-size="14.00">V7M</text>
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<!-- 7th Edition&#45;&gt;V7M -->
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<title>7th Edition&#45;&gt;V7M</title>
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<!-- Xenix -->
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<title>Xenix</title>
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<!-- 7th Edition&#45;&gt;Xenix -->
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<title>7th Edition&#45;&gt;Xenix</title>
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<!-- UniPlus+ -->
<g id="L9_node17_L9" class="node">
<title>UniPlus+</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="323.5" cy="-522" rx="55.49" ry="18"/>
<text text-anchor="middle" x="323.5" y="-518.3" font-family="Times,serif" font-size="14.00">UniPlus+</text>
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<!-- 7th Edition&#45;&gt;UniPlus+ -->
<g id="L9_edge16" class="edge">
<title>7th Edition&#45;&gt;UniPlus+</title>
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<!-- 3 BSD -->
<g id="L9_node23_L9" class="node">
<title>3 BSD</title>
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<text text-anchor="middle" x="396.5" y="-446.3" font-family="Times,serif" font-size="14.00">3 BSD</text>
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<!-- 32V&#45;&gt;3 BSD -->
<g id="L9_edge24" class="edge">
<title>32V&#45;&gt;3 BSD</title>
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<!-- 2.8 BSD -->
<g id="L9_node21_L9" class="node">
<title>2.8 BSD</title>
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<text text-anchor="middle" x="226.5" y="-230.3" font-family="Times,serif" font-size="14.00">2.8 BSD</text>
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<!-- 2 BSD&#45;&gt;2.8 BSD -->
<g id="L9_edge21" class="edge">
<title>2 BSD&#45;&gt;2.8 BSD</title>
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<!-- 4 BSD -->
<g id="L9_node24_L9" class="node">
<title>4 BSD</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="391.5" cy="-378" rx="40.09" ry="18"/>
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<!-- 3 BSD&#45;&gt;4 BSD -->
<g id="L9_edge25" class="edge">
<title>3 BSD&#45;&gt;4 BSD</title>
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<!-- 4.1 BSD -->
<g id="L9_node25_L9" class="node">
<title>4.1 BSD</title>
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<text text-anchor="middle" x="387.5" y="-302.3" font-family="Times,serif" font-size="14.00">4.1 BSD</text>
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<!-- 4 BSD&#45;&gt;4.1 BSD -->
<g id="L9_edge26" class="edge">
<title>4 BSD&#45;&gt;4.1 BSD</title>
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<!-- 4.1 BSD&#45;&gt;8th Edition -->
<g id="L9_edge29" class="edge">
<title>4.1 BSD&#45;&gt;8th Edition</title>
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<!-- 4.1 BSD&#45;&gt;2.8 BSD -->
<g id="L9_edge28" class="edge">
<title>4.1 BSD&#45;&gt;2.8 BSD</title>
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<!-- 4.2 BSD -->
<g id="L9_node26_L9" class="node">
<title>4.2 BSD</title>
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<text text-anchor="middle" x="378.5" y="-230.3" font-family="Times,serif" font-size="14.00">4.2 BSD</text>
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<!-- 4.1 BSD&#45;&gt;4.2 BSD -->
<g id="L9_edge27" class="edge">
<title>4.1 BSD&#45;&gt;4.2 BSD</title>
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<!-- PWB 1.2&#45;&gt;PWB 2.0 -->
<g id="L9_edge38" class="edge">
<title>PWB 1.2&#45;&gt;PWB 2.0</title>
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<!-- CB Unix 1 -->
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<title>CB Unix 1</title>
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<text text-anchor="middle" x="901.5" y="-590.3" font-family="Times,serif" font-size="14.00">CB Unix 1</text>
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<!-- USG 1.0&#45;&gt;CB Unix 1 -->
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<title>USG 1.0&#45;&gt;CB Unix 1</title>
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<!-- USG 2.0 -->
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<title>USG 2.0</title>
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<text text-anchor="middle" x="756.5" y="-590.3" font-family="Times,serif" font-size="14.00">USG 2.0</text>
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<!-- USG 1.0&#45;&gt;USG 2.0 -->
<g id="L9_edge40" class="edge">
<title>USG 1.0&#45;&gt;USG 2.0</title>
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<!-- CB Unix 2 -->
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<title>CB Unix 2</title>
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<text text-anchor="middle" x="939.5" y="-518.3" font-family="Times,serif" font-size="14.00">CB Unix 2</text>
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<!-- CB Unix 1&#45;&gt;CB Unix 2 -->
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<title>CB Unix 1&#45;&gt;CB Unix 2</title>
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<!-- USG 3.0 -->
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<title>USG 3.0</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="664.5" cy="-522" rx="50.09" ry="18"/>
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<!-- USG 2.0&#45;&gt;USG 3.0 -->
<g id="L9_edge45" class="edge">
<title>USG 2.0&#45;&gt;USG 3.0</title>
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<!-- CB Unix 3 -->
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<title>CB Unix 3</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="925.5" cy="-450" rx="57.69" ry="18"/>
<text text-anchor="middle" x="925.5" y="-446.3" font-family="Times,serif" font-size="14.00">CB Unix 3</text>
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<!-- CB Unix 2&#45;&gt;CB Unix 3 -->
<g id="L9_edge42" class="edge">
<title>CB Unix 2&#45;&gt;CB Unix 3</title>
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<!-- Unix/TS++ -->
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<title>Unix/TS++</title>
<ellipse fill="#b2dfee" stroke="#b2dfee" cx="867.5" cy="-378" rx="63.89" ry="18"/>
<text text-anchor="middle" x="867.5" y="-374.3" font-family="Times,serif" font-size="14.00">Unix/TS++</text>
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<!-- CB Unix 3&#45;&gt;Unix/TS++ -->
<g id="L9_edge43" class="edge">
<title>CB Unix 3&#45;&gt;Unix/TS++</title>
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<!-- PDP&#45;11 Sys V -->
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<title>PDP&#45;11 Sys V</title>
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<text text-anchor="middle" x="1022.5" y="-374.3" font-family="Times,serif" font-size="14.00">PDP&#45;11 Sys V</text>
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<!-- CB Unix 3&#45;&gt;PDP&#45;11 Sys V -->
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<title>CB Unix 3&#45;&gt;PDP&#45;11 Sys V</title>
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<g id="L9_edge50" class="edge">
<title>Unix/TS++&#45;&gt;TS 4.0</title>
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<!-- USG 3.0&#45;&gt;Unix/TS 3.0 -->
<g id="L9_edge46" class="edge">
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<!-- Unix/TS 1.0 -->
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<!-- System V.0 -->
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<g id="L9_edge52" class="edge">
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<text text-anchor="middle" x="573.5" y="-806.3" font-family="Times,serif" font-size="14.00">5th Edition</text>
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<!-- 6th Edition -->
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<title>6th Edition</title>
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<!-- 5th Edition&#45;&gt;6th Edition -->
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<title>5th Edition&#45;&gt;6th Edition</title>
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<!-- PWB 1.0 -->
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<title>PWB 1.0</title>
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<!-- 5th Edition&#45;&gt;PWB 1.0 -->
<g id="L10_edge2" class="edge">
<title>5th Edition&#45;&gt;PWB 1.0</title>
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<!-- LSX -->
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<title>LSX</title>
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<!-- 6th Edition&#45;&gt;LSX -->
<g id="L10_edge3" class="edge">
<title>6th Edition&#45;&gt;LSX</title>
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<!-- 1 BSD -->
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<title>1 BSD</title>
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<!-- 6th Edition&#45;&gt;1 BSD -->
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<title>6th Edition&#45;&gt;1 BSD</title>
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<!-- Mini Unix -->
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<title>Mini Unix</title>
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<!-- 6th Edition&#45;&gt;Mini Unix -->
<g id="L10_edge5" class="edge">
<title>6th Edition&#45;&gt;Mini Unix</title>
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<!-- Wollongong -->
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<title>Wollongong</title>
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<text text-anchor="middle" x="538.5" y="-662.3" font-family="Times,serif" font-size="14.00">Wollongong</text>
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<!-- 6th Edition&#45;&gt;Wollongong -->
<g id="L10_edge6" class="edge">
<title>6th Edition&#45;&gt;Wollongong</title>
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<!-- Interdata -->
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<title>Interdata</title>
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<!-- 6th Edition&#45;&gt;Interdata -->
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<title>6th Edition&#45;&gt;Interdata</title>
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<!-- PWB 1.2 -->
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<title>PWB 1.2</title>
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<!-- PWB 1.0&#45;&gt;PWB 1.2 -->
<g id="L10_edge36" class="edge">
<title>PWB 1.0&#45;&gt;PWB 1.2</title>
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<!-- USG 1.0 -->
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<title>USG 1.0</title>
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<!-- PWB 1.0&#45;&gt;USG 1.0 -->
<g id="L10_edge37" class="edge">
<title>PWB 1.0&#45;&gt;USG 1.0</title>
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<!-- 2 BSD -->
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<title>2 BSD</title>
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<!-- 1 BSD&#45;&gt;2 BSD -->
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<!-- Unix/TS 3.0 -->
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<!-- Interdata&#45;&gt;Unix/TS 3.0 -->
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<!-- PWB 2.0 -->
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<title>PWB 2.0</title>
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<!-- Interdata&#45;&gt;PWB 2.0 -->
<g id="L10_edge9" class="edge">
<title>Interdata&#45;&gt;PWB 2.0</title>
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<!-- 7th Edition -->
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<title>7th Edition</title>
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<!-- Interdata&#45;&gt;7th Edition -->
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<!-- TS 4.0 -->
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<!-- Unix/TS 3.0&#45;&gt;TS 4.0 -->
<g id="L10_edge49" class="edge">
<title>Unix/TS 3.0&#45;&gt;TS 4.0</title>
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<!-- PWB 2.0&#45;&gt;Unix/TS 3.0 -->
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<!-- 8th Edition -->
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<title>8th Edition</title>
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<!-- 7th Edition&#45;&gt;8th Edition -->
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<!-- 32V -->
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<!-- 7th Edition&#45;&gt;32V -->
<g id="L10_edge12" class="edge">
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<!-- V7M -->
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<!-- 7th Edition&#45;&gt;V7M -->
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<!-- Ultrix&#45;11 -->
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<!-- 7th Edition&#45;&gt;Ultrix&#45;11 -->
<g id="L10_edge14" class="edge">
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<!-- Xenix -->
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<!-- 7th Edition&#45;&gt;Xenix -->
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<!-- UniPlus+ -->
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<!-- 7th Edition&#45;&gt;UniPlus+ -->
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<!-- 9th Edition -->
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<!-- 3 BSD -->
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<!-- 2.8 BSD -->
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<!-- 2.9 BSD -->
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<!-- 4 BSD -->
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<!-- 4.1 BSD&#45;&gt;2.8 BSD -->
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<!-- PWB 1.0 -->
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<!-- 6th Edition&#45;&gt;LSX -->
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<!-- Interdata&#45;&gt;7th Edition -->
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<!-- TS 4.0 -->
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<!-- 32V -->
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<!-- 7th Edition&#45;&gt;32V -->
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<!-- 7th Edition&#45;&gt;V7M -->
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<!-- 7th Edition&#45;&gt;Ultrix&#45;11 -->
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<!-- Xenix -->
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<!-- 7th Edition&#45;&gt;Xenix -->
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<!-- 7th Edition&#45;&gt;UniPlus+ -->
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<!-- 9th Edition -->
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<!-- 8th Edition&#45;&gt;9th Edition -->
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<!-- 32V&#45;&gt;3 BSD -->
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<!-- 10th Edition -->
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<!-- 2.8 BSD -->
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<!-- 2.9 BSD -->
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<!-- 4 BSD -->
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<!-- 3 BSD&#45;&gt;4 BSD -->
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<!-- 4.1 BSD -->
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<!-- 4.2 BSD -->
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<!-- 4.3 BSD -->
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<!-- Ultrix&#45;32 -->
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<!-- 4.2 BSD&#45;&gt;Ultrix&#45;32 -->
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<title>CB Unix 3&#45;&gt;TS 4.0</title>
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<!-- 6th Edition&#45;&gt;Interdata -->
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<!-- USG 1.0 -->
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<!-- 32V&#45;&gt;3 BSD -->
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<title>32V&#45;&gt;3 BSD</title>
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<!-- V7M&#45;&gt;Ultrix&#45;11 -->
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<title>V7M&#45;&gt;Ultrix&#45;11</title>
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<!-- 10th Edition -->
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<title>10th Edition</title>
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<!-- 9th Edition&#45;&gt;10th Edition -->
<g id="L12_edge19" class="edge">
<title>9th Edition&#45;&gt;10th Edition</title>
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<!-- 2.8 BSD -->
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<!-- 2 BSD&#45;&gt;2.8 BSD -->
<g id="L12_edge21" class="edge">
<title>2 BSD&#45;&gt;2.8 BSD</title>
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<!-- 2.8 BSD&#45;&gt;Ultrix&#45;11 -->
<g id="L12_edge22" class="edge">
<title>2.8 BSD&#45;&gt;Ultrix&#45;11</title>
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<!-- 2.9 BSD -->
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<g id="L12_edge23" class="edge">
<title>2.8 BSD&#45;&gt;2.9 BSD</title>
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<!-- 4 BSD -->
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<!-- 3 BSD&#45;&gt;4 BSD -->
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<title>3 BSD&#45;&gt;4 BSD</title>
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<!-- 4.1 BSD -->
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<!-- 4.2 BSD -->
<g id="L12_node26_L12" class="node">
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<!-- 4.3 BSD -->
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<!-- Ultrix&#45;32 -->
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<!-- 4.4 BSD -->
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<!-- 4.3 BSD&#45;&gt;4.4 BSD -->
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<!-- FreeBSD -->
<g id="L12_node30_L12" class="node">
<title>FreeBSD</title>
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<g id="L12_edge33" class="edge">
<title>4.4 BSD&#45;&gt;FreeBSD</title>
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<!-- NetBSD -->
<g id="L12_node31_L12" class="node">
<title>NetBSD</title>
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<text text-anchor="middle" x="462.5" y="-14.3" font-family="Times,serif" font-size="14.00">NetBSD</text>
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<!-- 4.4 BSD&#45;&gt;NetBSD -->
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<title>4.4 BSD&#45;&gt;NetBSD</title>
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<!-- OpenBSD -->
<g id="L12_node32_L12" class="node">
<title>OpenBSD</title>
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<text text-anchor="middle" x="584.5" y="-14.3" font-family="Times,serif" font-size="14.00">OpenBSD</text>
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<!-- 4.4 BSD&#45;&gt;OpenBSD -->
<g id="L12_edge35" class="edge">
<title>4.4 BSD&#45;&gt;OpenBSD</title>
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<!-- PWB 1.2&#45;&gt;PWB 2.0 -->
<g id="L12_edge38" class="edge">
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<!-- CB Unix 1 -->
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<title>CB Unix 1</title>
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<!-- USG 1.0&#45;&gt;CB Unix 1 -->
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<title>USG 1.0&#45;&gt;CB Unix 1</title>
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<!-- USG 2.0 -->
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<title>USG 2.0</title>
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<text text-anchor="middle" x="756.5" y="-590.3" font-family="Times,serif" font-size="14.00">USG 2.0</text>
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<!-- USG 1.0&#45;&gt;USG 2.0 -->
<g id="L12_edge40" class="edge">
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<!-- CB Unix 2 -->
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<text text-anchor="middle" x="939.5" y="-518.3" font-family="Times,serif" font-size="14.00">CB Unix 2</text>
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<!-- CB Unix 1&#45;&gt;CB Unix 2 -->
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<title>CB Unix 1&#45;&gt;CB Unix 2</title>
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<!-- USG 3.0 -->
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<!-- USG 2.0&#45;&gt;USG 3.0 -->
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<!-- CB Unix 3 -->
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<title>CB Unix 3</title>
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<!-- CB Unix 2&#45;&gt;CB Unix 3 -->
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<!-- Unix/TS++ -->
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<title>Unix/TS++</title>
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<title>PDP&#45;11 Sys V</title>
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<!-- CB Unix 3&#45;&gt;PDP&#45;11 Sys V -->
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<!-- System V.2 -->
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<!-- System V.3 -->
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<g id="L12_edge54" class="edge">
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<g id="L12_edge55" class="edge">
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</g>
</g>
<script type="text/javascript" >
<![CDATA[
var forward=1;
var backward=-1;
var intervalMilliseconds=0;
var timer;
var currId=-1;
var oldId;
var layer = new Array();
window.addEventListener("load", function() {
//alert("loaded");
initialize();
showHelp();
});
document.onkeydown = function(e) {
switch (e.keyCode) {
case 37:
direction=backward;
break;
case 38:
intervalMilliseconds-=1000;
changeSpeed();
break;
case 39:
direction=forward;
break;
case 40:
intervalMilliseconds+=1000;
changeSpeed();
break;
default:
showHelp();
break;
}
};
function showHelp(){
//alert('up arrow: \tfaster\ndown arrow:\tslower\nleft arrow:\tbackward\nright arrow:\tforward');
alert('left arrow:\tbackward\nright arrow:\tforward\nup arrow: \tfaster\ndown arrow:\tslower');
}
function initialize(){
// copy the "live" nodelist into a real array
var layerList = document.getElementsByClassName('layer');
for (var i =0;i<layerList.length;i++){
layer.push(layerList[i]);
}
// make all layers invisible, except the 1st
for (var i=1;i<layer.length;i++){
target=layer[i];
target.setAttribute("display", "none");
}
currId=0;
intervalSeconds=4;
direction=forward;
intervalMilliseconds=intervalSeconds*1000;
timer=setInterval("show()",intervalMilliseconds);
}
function changeSpeed(){
clearInterval(timer);
timer=setInterval("show()",intervalMilliseconds);
}
function show(){
oldId=currId;
if (direction==forward){
if (currId==layer.length - 1) {
//currId=0;
clearInterval(timer);
return;
}else{
currId++;
}
} else if (direction==backward){
if (currId==0){
//currId=layer.length - 1;
clearInterval(timer);
return;
}else{
currId--;
}
}
// make previous layer invisible
if (oldId>=0){
target=layer[oldId];
target.setAttribute("display", "none");
}
// make this layer visible
target=layer[currId];
target.setAttribute("display", "inline");
}
]]>
</script>
</svg>
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