From e4dc3273f201ae741637b626998637cce973546b Mon Sep 17 00:00:00 2001
From: Cliff Click <cliffc@acm.org>
Date: Fri, 2 Oct 2026 13:04:34 -0700
Subject: First pass README updates

---
 chapter01/docs/01-graph.svg | 129 +++++++++++++++++++++++++-------------------
 1 file changed, 73 insertions(+), 56 deletions(-)

(limited to 'chapter01/docs/01-graph.svg')

diff --git a/chapter01/docs/01-graph.svg b/chapter01/docs/01-graph.svg
index 7f511966..d8ec5cb7 100644
--- a/chapter01/docs/01-graph.svg
+++ b/chapter01/docs/01-graph.svg
@@ -1,56 +1,73 @@
-<?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 2.43.0 (0)
- -->
-<!-- Title: chapter01 Pages: 1 -->
-<svg width="114pt" height="220pt"
- viewBox="0.00 0.00 114.00 220.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 216)">
-<title>chapter01</title>
-<polygon fill="white" stroke="transparent" points="-4,4 -4,-216 110,-216 110,4 -4,4"/>
-<g id="clust1" class="cluster">
-<title>cluster_Nodes</title>
-<polygon fill="none" stroke="black" points="8,-8 8,-204 98,-204 98,-8 8,-8"/>
-</g>
-<!-- Start1 -->
-<g id="node1" class="node">
-<title>Start1</title>
-<polygon fill="yellow" stroke="black" points="80,-196 26,-196 26,-160 80,-160 80,-196"/>
-<text text-anchor="middle" x="53" y="-174.3" font-family="Times,serif" font-size="14.00">Start</text>
-</g>
-<!-- Con_2 -->
-<g id="node2" class="node">
-<title>Con_2</title>
-<ellipse fill="none" stroke="black" cx="43" cy="-106" rx="27" ry="18"/>
-<text text-anchor="middle" x="43" y="-102.3" font-family="Times,serif" font-size="14.00">#1</text>
-</g>
-<!-- Con_2&#45;&gt;Start1 -->
-<g id="edge1" class="edge">
-<title>Con_2&#45;&gt;Start1</title>
-<path fill="none" stroke="black" stroke-dasharray="1,5" d="M45.42,-123.95C46.52,-131.65 47.85,-140.97 49.09,-149.64"/>
-<polygon fill="black" stroke="black" points="45.65,-150.32 50.53,-159.72 52.58,-149.33 45.65,-150.32"/>
-<text text-anchor="middle" x="42.42" y="-126.55" font-family="Helvetica,sans-Serif" font-size="8.00">0</text>
-</g>
-<!-- Return3 -->
-<g id="node3" class="node">
-<title>Return3</title>
-<polygon fill="yellow" stroke="black" points="86,-52 20,-52 20,-16 86,-16 86,-52"/>
-<text text-anchor="middle" x="53" y="-30.3" font-family="Times,serif" font-size="14.00">Return</text>
-</g>
-<!-- Return3&#45;&gt;Start1 -->
-<g id="edge2" class="edge">
-<title>Return3&#45;&gt;Start1</title>
-<path fill="none" stroke="red" d="M64.05,-52.39C69.74,-62.38 76.08,-75.42 79,-88 82.62,-103.59 82.62,-108.41 79,-124 76.9,-133.04 73.03,-142.32 68.91,-150.53"/>
-<polygon fill="red" stroke="red" points="65.69,-149.14 64.05,-159.61 71.86,-152.45 65.69,-149.14"/>
-<text text-anchor="middle" x="61.05" y="-54.99" font-family="Helvetica,sans-Serif" font-size="8.00">0</text>
-</g>
-<!-- Return3&#45;&gt;Con_2 -->
-<g id="edge3" class="edge">
-<title>Return3&#45;&gt;Con_2</title>
-<path fill="none" stroke="black" d="M50.53,-52.3C49.43,-60.02 48.1,-69.29 46.87,-77.89"/>
-<polygon fill="black" stroke="black" points="43.39,-77.5 45.44,-87.9 50.32,-78.49 43.39,-77.5"/>
-<text text-anchor="middle" x="47.53" y="-54.9" font-family="Helvetica,sans-Serif" font-size="8.00">1</text>
-</g>
-</g>
-</svg>
+<svg aria-label="Compiler graph" width="320" height="208" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 208" style="font-family: sans-serif;"><style>
+    html, body { height:100%; margin:0; font-family:sans-serif; }
+    .viewer { height:100%; display:grid; grid-template-rows:auto minmax(0,1fr) auto; }
+    .source { padding:8px; border-bottom:1px solid #ccc; }
+    #program { width:min(600px,80vw); vertical-align:middle; }
+    #status { margin-top:4px; }
+    #graph { min-height:0; overflow:hidden; position:relative; background:#fafbfc; }
+    #elk { width:100%; height:100%; }
+    #graph svg { display:block; }
+    .tools { display:flex; flex-wrap:wrap; align-items:center; gap:14px; margin-top:8px; font-size:12px; }
+    .hint { color:#616c78; }
+    .ctrl { color:#b63838; } .mem { color:#2867b2; } .data { color:#536477; }
+    .edge { fill:none; stroke-width:1.5; }
+    .edge.CTRL { stroke-width:2; }
+    .edge.ASSOC { stroke-dasharray:4 4; }
+    .edge.PARSER { stroke-dasharray:5 4; }
+    .parser rect { fill:#f6f0ff; stroke:#7956a5; stroke-width:1.5; stroke-dasharray:5 4; }
+    .edge.selected { stroke-width:3.5; }
+    .edge.bundle { stroke-width:4; }
+    .edge.bundle.selected { stroke-width:6; }
+    .edge-hit { fill:none; stroke:transparent; stroke-width:12; vector-effect:non-scaling-stroke; pointer-events:stroke; cursor:pointer; }
+    .edge-jump { fill:transparent; pointer-events:all; cursor:pointer; }
+    .node { cursor:pointer; }
+    .box { stroke:#758191; stroke-width:1; }
+    .node.held .box { stroke-dasharray:5 3; }
+    .node.near .box { stroke:#c18221; stroke-width:2; }
+    .node.focus .box { stroke:#9c4900; stroke-width:3; }
+    .node.selected .box { stroke:#1569b9; stroke-width:3; }
+    .node.folded .box { stroke-width:4; }
+    .node.folding .box { fill:#f4ccd7; }
+    .fold-tag { font-size:9px; font-weight:700; fill:#963751; }
+    .peep-area { fill:#fff3d9; fill-opacity:.8; stroke:#c18221; stroke-width:2; pointer-events:none; }
+    .node.peep-edit .box { stroke:#9c4900; stroke-width:3; }
+    .node.error .box { stroke:#b42318; stroke-width:4; }
+    #event.error { color:#b42318; font-weight:600; white-space:pre-wrap; overflow-wrap:anywhere; }
+    .peep-ghosts { pointer-events:none; }
+    .region-box { stroke:#9da9b8; stroke-width:1.5; }
+    .fold-btn { cursor:pointer; }
+    .fold-btn rect { fill:white; stroke:#596674; }
+    .fold-btn text { font-size:14px; fill:#152330; }
+    .fold-btn:focus rect { stroke:#1569b9; stroke-width:2; }
+    .shortcut { cursor:pointer; }
+    .shortcut path { fill:none; stroke-width:1.5; }
+    .shortcut rect { fill:#fff8ec; stroke:#b63838; stroke-dasharray:3 2; }
+    .shortcut text { font-size:11px; fill:#783030; }
+    .shortcut.selected rect, .shortcut:focus rect { stroke-width:2.5; }
+    .label { font-size:12px; fill:#152330; font-weight:600; }
+    .node-id { font-size:10px; fill:#596674; font-weight:400; }
+    .type { font-size:11px; fill:#455768; }
+    .port { stroke:#536477; stroke-width:1; }
+    .row { stroke:#b6afcf; stroke-width:1; }
+    .bind { font-size:12px; fill:#152330; }
+    .slot { font-size:10px; fill:#364352; paint-order:stroke; stroke:#fafbfc; stroke-width:3; }
+    #detail { position:absolute; top:8px; right:8px; margin:0; padding:12px; max-width:320px;
+      max-height:45%; overflow:auto; white-space:pre-wrap; overflow-wrap:anywhere;
+      background:#fffffff2; border:1px solid #bac5d0; border-radius:4px; font-size:12px; }
+    .controls { display:flex; flex-wrap:wrap; justify-content:center; align-items:center; gap:6px; padding:6px; }
+    .button { color:white; background:black; font-size:20px; min-width:30px; }
+    .button:disabled { background:grey; }
+    .count { font-size:20px; min-width:35px; text-align:center; }
+    #N { width:6ch; }
+    #scrub { width:clamp(120px,35vw,600px); }
+  </style><defs><marker id="arrow-CTRL" viewBox="0 -4 8 8" refX="8" refY="0" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,-4L8,0L0,4Z" fill="#b63838"/></marker><marker id="arrow-DATA" viewBox="0 -4 8 8" refX="8" refY="0" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,-4L8,0L0,4Z" fill="#536477"/></marker><marker id="arrow-MEM" viewBox="0 -4 8 8" refX="8" refY="0" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,-4L8,0L0,4Z" fill="#2867b2"/></marker><marker id="arrow-ASSOC" viewBox="0 -4 8 8" refX="8" refY="0" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,-4L8,0L0,4Z" fill="#9396a3"/></marker><marker id="arrow-PARSER" viewBox="0 -4 8 8" refX="8" refY="0" markerWidth="7" markerHeight="7" orient="auto-start-reverse"><path d="M0,-4L8,0L0,4Z" fill="#7956a5"/></marker></defs><rect width="100%" height="100%" fill="rgb(250, 251, 252)"/><g><g class="regions" style="opacity: 1;"/><rect class="peep-area" rx="36" style="opacity: 0;"/><g class="edges"><path class="edge ASSOC" id="e2i0" d="M84,77 C84,101 236,3 236,27" stroke="#9396a3" marker-start="url(#arrow-ASSOC)" style="opacity: 1;"><title>#2[0] → #1 · ASSOC</title></path><path class="edge CTRL" id="e3i0" d="M84,80 L84,128" stroke="#b63838" marker-start="url(#arrow-CTRL)" style="opacity: 1;"><title>#3[0] → #1 · CTRL</title></path><path class="edge DATA" id="e3i1" d="M236,80 L236,90 L124,90 L124,128" stroke="#536477" marker-start="url(#arrow-DATA)" style="opacity: 1;"><title>#3[1] → #2 · DATA</title></path></g><g class="edge-hits"/><g class="parser" style="opacity: 1;"/><g class="nodes"><g class="node" id="n1" data-id="1" transform="translate(24,30)" style="opacity: 1;"><path class="box" d="M0,0H120V44H0Z" fill="#fff1c4"/><text class="label" text-anchor="middle" x="60" y="18"><tspan>Start</tspan><tspan class="node-id">  #1</tspan></text><text class="type" text-anchor="middle" y="35" x="60"/><title>#1 Start
+Type not computed
+
+</title></g><g class="node" id="n2" data-id="2" transform="translate(176,30)" style="opacity: 1;"><path class="box" d="M14,0H106Q120,0 120,14V30Q120,44 106,44H14Q0,44 0,30V14Q0,0 14,0Z" fill="#edf3f7"/><text class="label" text-anchor="middle" x="60" y="18"><tspan>#1</tspan><tspan class="node-id">  #2</tspan></text><text class="type" text-anchor="middle" y="35" x="60"/><title>#2 #1
+Type not computed
+
+[0] → #1  ASSOC</title><circle class="port" cx="60" cy="-3" r="3" fill="#536477"/><text class="slot" x="60" y="-10" text-anchor="middle">0</text></g><g class="node" id="n3" data-id="3" transform="translate(44,134)" style="opacity: 1;"><path class="box" d="M0,0H120V44H0Z" fill="#fff1c4"/><text class="label" text-anchor="middle" x="60" y="18"><tspan>Return</tspan><tspan class="node-id">  #3</tspan></text><text class="type" text-anchor="middle" y="35" x="60"/><title>#3 Return
+Type not computed
+
+[0] → #1  CTRL
+[1] → #2  DATA</title><circle class="port" cx="40" cy="-3" r="3" fill="#536477"/><circle class="port" cx="80" cy="-3" r="3" fill="#536477"/><text class="slot" x="40" y="-10" text-anchor="middle">0</text><text class="slot" x="80" y="-10" text-anchor="middle">1</text></g></g><g class="region-heads" style="opacity: 1;"/><g class="shortcuts" style="opacity: 1;"/><g class="peep-ghosts" pointer-events="none"/></g></svg>
-- 
cgit v1.2.3