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+<!doctype html>
+
+<title>CodeMirror: Visible tabs demo</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../doc/docs.css">
+
+<link rel="stylesheet" href="../lib/codemirror.css">
+<script src="../lib/codemirror.js"></script>
+<script src="../mode/clike/clike.js"></script>
+<style>
+      .CodeMirror {border-top: 1px solid #eee; border-bottom: 1px solid #eee;}
+      .cm-tab {
+         background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAADAAAAAMCAYAAAAkuj5RAAAAAXNSR0IArs4c6QAAAGFJREFUSMft1LsRQFAQheHPowAKoACx3IgEKtaEHujDjORSgWTH/ZOdnZOcM/sgk/kFFWY0qV8foQwS4MKBCS3qR6ixBJvElOobYAtivseIE120FaowJPN75GMu8j/LfMwNjh4HUpwg4LUAAAAASUVORK5CYII=);
+         background-position: right;
+         background-repeat: no-repeat;
+      }
+    </style>
+<div id=nav>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a>
+
+  <ul>
+    <li><a href="../index.html">Home</a>
+    <li><a href="../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/codemirror/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a class=active href="#">Visible tabs</a>
+  </ul>
+</div>
+
+<article>
+<h2>Visible tabs demo</h2>
+<form><textarea id="code" name="code">
+#include "syscalls.h"
+/* getchar:  simple buffered version */
+int getchar(void)
+{
+	static char buf[BUFSIZ];
+	static char *bufp = buf;
+	static int n = 0;
+	if (n == 0) {  /* buffer is empty */
+		n = read(0, buf, sizeof buf);
+		bufp = buf;
+	}
+	return (--n >= 0) ? (unsigned char) *bufp++ : EOF;
+}
+</textarea></form>
+
+<p>Tabs inside the editor are spans with the
+class <code>cm-tab</code>, and can be styled.</p>
+
+    <script>
+      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+        lineNumbers: true,
+        tabSize: 4,
+        indentUnit: 4,
+        indentWithTabs: true,
+        mode: "text/x-csrc"
+      });
+    </script>
+
+  </article>