diff --git a/examples/netz/index.html b/examples/netz/index.html
index 431a561..fabaebe 100644
--- a/examples/netz/index.html
+++ b/examples/netz/index.html
@@ -42,7 +42,7 @@
       }
     </style>
     <script src="https://cdn.jsdelivr.net/npm/p5@1.11.3/lib/p5.min.js"></script>
-    <script src="../../lib/WallPlotter.js?v=2.3.5"></script>
+    <script src="../../lib/WallPlotter.js?v=2.3.13"></script>
     <script src="sketch.js"></script>
   </head>
   <body>
diff --git a/examples/netz/sketch.js b/examples/netz/sketch.js
index 2c98882..be3ffff 100644
--- a/examples/netz/sketch.js
+++ b/examples/netz/sketch.js
@@ -1,6 +1,6 @@
 let wp;
 
-let area = 320;
+let area = 100;
 
 function setup() {
   const canvas = createCanvas(windowWidth, windowHeight);
diff --git a/examples/zickzack/index.html b/examples/zickzack/index.html
index 431a561..fabaebe 100644
--- a/examples/zickzack/index.html
+++ b/examples/zickzack/index.html
@@ -42,7 +42,7 @@
       }
     </style>
     <script src="https://cdn.jsdelivr.net/npm/p5@1.11.3/lib/p5.min.js"></script>
-    <script src="../../lib/WallPlotter.js?v=2.3.5"></script>
+    <script src="../../lib/WallPlotter.js?v=2.3.13"></script>
     <script src="sketch.js"></script>
   </head>
   <body>
diff --git a/lib/README.md b/lib/README.md
index 9b2e309..db95de1 100644
--- a/lib/README.md
+++ b/lib/README.md
@@ -29,7 +29,7 @@ All options are optional.
 | `machineXMin` / `machineXMax` | `-830` / `830` | Overlay X extents, mm (idler spacing 1660) |
 | `machineYMin` / `machineYMax` | `-1200` / `800` | Overlay Y; idlers at Y=800 (80 cm above work centre) |
 | `jogIntervalMs` | `150` | Repeat delay while holding arrows, ms |
-| `maxLogLines` | `8` | Serial lines shown on the HUD |
+| `maxLogLines` | `40` | Serial lines in the selectable log (bottom-right) |
 | `previewMinDelayMs` | `30` | Floor for preview segment wait, ms |
 | `previewFrameMs` | `16` | Preview animation frame time, ms |
 | `timingMultiplier` | `1` | Scale **Test** preview waits (`2` = twice as slow) |
diff --git a/lib/WallPlotter.js b/lib/WallPlotter.js
index c36af08..482954a 100644
--- a/lib/WallPlotter.js
+++ b/lib/WallPlotter.js
@@ -18,7 +18,7 @@ class WallPlotter {
   // Static constants
   // ---------------------------------------------------------------------------
 
-  static VERSION = '2.3.5';
+  static VERSION = '2.3.13';
   static MIN_FEED_MM_MIN = 1;
   static MAX_FEED_MM_MIN = 10000;
   /** Offline overlay size when not connected (mm) — 150×150 cm centred on origin */
@@ -55,7 +55,7 @@ class WallPlotter {
    * @param {number} [options.machineYMax]
    * @param {number} [options.previewSizeMm] Offline square size (mm)
    * @param {number} [options.jogIntervalMs=150]
-   * @param {number} [options.maxLogLines=8]
+   * @param {number} [options.maxLogLines=40]
    * @param {number} [options.previewMinDelayMs=30] Floor for preview segment wait
    * @param {number} [options.previewFrameMs=16] Preview animation frame time
    * @param {number} [options.timingMultiplier=1] Scales Test preview waits
@@ -83,7 +83,7 @@ class WallPlotter {
     // --- Jog / UI ---
     this.stepSize = options.stepSize ?? 10;
     this.jogIntervalMs = options.jogIntervalMs ?? 150;
-    this.maxLogLines = options.maxLogLines ?? 8;
+    this.maxLogLines = options.maxLogLines ?? 40;
     this.previewMinDelayMs = options.previewMinDelayMs ?? 30;
     this.previewFrameMs = options.previewFrameMs ?? 16;
 
@@ -147,6 +147,7 @@ class WallPlotter {
     this.onLog = (line) => {
       this.logLines.push(line);
       if (this.logLines.length > this.maxLogLines) this.logLines.shift();
+      this._syncLogOverlay();
       userOnLog(line);
     };
 
@@ -267,6 +268,7 @@ class WallPlotter {
     textFont('monospace', 14);
     this._drawPlotArea();
     this._drawHud();
+    this._syncLogOverlay();
     if (this._keysEnabled && !this.isPlotting) this._handleContinuousJog();
   }
 
@@ -1742,6 +1744,29 @@ class WallPlotter {
         border-color: #444;
         color: #888;
       }
+      #wallplotter-log {
+        position: absolute;
+        right: 0.75rem;
+        bottom: 0.75rem;
+        z-index: 20;
+        max-width: min(52rem, calc(100vw - 1.5rem));
+        max-height: 42vh;
+        overflow: auto;
+        user-select: text;
+        -webkit-user-select: text;
+        pointer-events: auto;
+        font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+        font-size: 12px;
+        line-height: 1.4;
+        color: #c8c8d0;
+        background: rgba(18, 18, 22, 0.88);
+        border: 1px solid #3a3a42;
+        border-radius: 6px;
+        padding: 0.45rem 0.6rem;
+        white-space: pre-wrap;
+        word-break: break-word;
+        margin: 0;
+      }
     `;
     document.head.appendChild(style);
   }
@@ -1985,13 +2010,27 @@ class WallPlotter {
         text(help[i], 16, height - 16 - i * 18);
       }
     }
+  }
 
-    textAlign(RIGHT, BOTTOM);
-    fill(140);
-    const n = this.logLines.length;
-    for (let i = 0; i < n; i++) {
-      text(this.logLines[i], width - 16, height - 16 - (n - 1 - i) * 16);
+  _ensureLogOverlay() {
+    this._injectPlotButtonStyles();
+    let el = document.getElementById('wallplotter-log');
+    if (el) return el;
+    el = document.createElement('pre');
+    el.id = 'wallplotter-log';
+    el.setAttribute('aria-label', 'Serial log');
+    document.body.appendChild(el);
+    return el;
+  }
+
+  _syncLogOverlay() {
+    const el = this._ensureLogOverlay();
+    const text = this.logLines.join('\n');
+    if (el.textContent !== text) {
+      el.textContent = text;
+      el.scrollTop = el.scrollHeight;
     }
+    el.style.display = this.logLines.length ? 'block' : 'none';
   }
 
   // ===========================================================================