diff --git a/2.1.x/spring-cloud-sleuth.html b/2.1.x/spring-cloud-sleuth.html
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+++ b/2.1.x/spring-cloud-sleuth.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<!--[if IE]><meta http-equiv="X-UA-Compatible" content="IE=edge"><![endif]-->
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<meta name="generator" content="Asciidoctor 1.5.7.1">
+<title>spring-cloud-sleuth</title>
+<link rel="stylesheet" href="css/manual-singlepage.css">
+<style>
+.hidden {
+	display: none;
+}
+
+.switch {
+	border-width: 1px 1px 0 1px;
+	border-style: solid;
+	border-color: #7a2518;
+	display: inline-block;
+}
+
+.switch--item {
+	padding: 10px;
+	background-color: #ffffff;
+	color: #7a2518;
+	display: inline-block;
+	cursor: pointer;
+}
+
+.switch--item.selected {
+	background-color: #7a2519;
+	color: #ffffff;
+}
+</style>
+<script src="http://cdnjs.cloudflare.com/ajax/libs/zepto/1.2.0/zepto.min.js"></script>
+<script type="text/javascript">
+function addBlockSwitches() {
+	$('.primary').each(function() {
+		primary = $(this);
+		createSwitchItem(primary, createBlockSwitch(primary)).item.addClass("selected");
+		primary.children('.title').remove();
+	});
+	$('.secondary').each(function(idx, node) {
+		secondary = $(node);
+		primary = findPrimary(secondary);
+		switchItem = createSwitchItem(secondary, primary.children('.switch'));
+		switchItem.content.addClass('hidden');
+		findPrimary(secondary).append(switchItem.content);
+		secondary.remove();
+	});
+}
+
+function createBlockSwitch(primary) {
+	blockSwitch = $('<div class="switch"></div>');
+	primary.prepend(blockSwitch);
+	return blockSwitch;
+}
+
+function findPrimary(secondary) {
+	candidate = secondary.prev();
+	while (!candidate.is('.primary')) {
+		candidate = candidate.prev();
+	}
+	return candidate;
+}
+
+function createSwitchItem(block, blockSwitch) {
+	blockName = block.children('.title').text();
+	content = block.children('.content').first().append(block.next('.colist'));
+	item = $('<div class="switch--item">' + blockName + '</div>');
+	item.on('click', '', content, function(e) {
+		$(this).addClass('selected');
+		$(this).siblings().removeClass('selected');
+		e.data.siblings('.content').addClass('hidden');
+		e.data.removeClass('hidden');
+	});
+	blockSwitch.append(item);
+	return {'item': item, 'content': content};
+}
+
+$(addBlockSwitches);
+</script>
+</head>
+
+<body class="article">
+<div id="header">
+<h1>spring-cloud-sleuth</h1>
+</div>
+<div id="content">
+<div id="preamble">
+<div class="sectionbody">
+<div class="paragraph">
+<p>2.1.3.BUILD-SNAPSHOT</p>
+</div>
+</div>
+</div>
+<div class="sect1">
+<h2 id="_pick_the_documentation_option">Pick The Documentation Option</h2>
+<div class="sectionbody">
+<div class="ulist">
+<ul>
+<li>
+<p><a href="single/spring-cloud-sleuth.html">Single HTML</a></p>
+</li>
+<li>
+<p><a href="multi/multi_spring-cloud-sleuth.html">Multi HTML</a></p>
+</li>
+</ul>
+</div>
+</div>
+</div>
+</div>
+<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.min.css">
+<script src="https://cdnjs.cloudflare.com/ajax/libs/prettify/r298/prettify.min.js"></script>
+<script>prettyPrint()</script>
+</body>
+</html>
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