terraform/website/source/layouts/intro.erb

<% wrap_layout :inner do %>
	<% content_for :sidebar do %>
		<div class="docs-sidebar hidden-print affix-top" role="complementary">
			<ul class="nav docs-sidenav">
				<li<%= sidebar_current("what") %>>
				<a href="/intro/index.html">What is Terraform?</a>
                </li>

				<li<%= sidebar_current("what") %>>
				<a href="/intro/index.html">Use Cases</a>
				</li>

				<li<%= sidebar_current("vs-other") %>>
				<a href="/intro/vs/index.html">Terraform vs. Other Software</a>
				<ul class="nav">
					<li<%= sidebar_current("vs-other-zk") %>>
					<a href="/intro/vs/zookeeper.html">ZooKeeper, doozerd, etcd</a>
					</li>

					<li<%= sidebar_current("vs-other-chef") %>>
					<a href="/intro/vs/chef-puppet.html">Chef, Puppet, etc.</a>
                    </li>

					<li<%= sidebar_current("vs-other-nagios-sensu") %>>
					<a href="/intro/vs/nagios-sensu.html">Nagios, Sensu</a>
                    </li>

					<li<%= sidebar_current("vs-other-skydns") %>>
					<a href="/intro/vs/skydns.html">SkyDNS</a>
                    </li>

					<li<%= sidebar_current("vs-other-smartstack") %>>
					<a href="/intro/vs/smartstack.html">SmartStack</a>
                    </li>

					<li<%= sidebar_current("vs-other-serf") %>>
					<a href="/intro/vs/serf.html">Serf</a>
                    </li>

					<li<%= sidebar_current("vs-other-custom") %>>
					<a href="/intro/vs/custom.html">Custom Solutions</a>
					</li>
				</ul>
				</li>

				<li<%= sidebar_current("gettingstarted") %>>
				<a href="/intro/getting-started/install.html">Getting Started</a>
				<ul class="nav">
					<li<%= sidebar_current("gettingstarted-install") %>>
					<a href="/intro/getting-started/install.html">Install Terraform</a>
					</li>

					<li<%= sidebar_current("gettingstarted-agent") %>>
					<a href="/intro/getting-started/agent.html">Run the Agent</a>
					</li>

					<li<%= sidebar_current("gettingstarted-services") %>>
					<a href="/intro/getting-started/services.html">Services</a>
					</li>

					<li<%= sidebar_current("gettingstarted-join") %>>
					<a href="/intro/getting-started/join.html">Terraform Cluster</a>
					</li>

					<li<%= sidebar_current("gettingstarted-checks") %>>
					<a href="/intro/getting-started/checks.html">Health Checks</a>
					</li>

					<li<%= sidebar_current("gettingstarted-kv") %>>
					<a href="/intro/getting-started/kv.html">Key/Value Data</a>
					</li>

					<li<%= sidebar_current("gettingstarted-ui") %>>
					<a href="/intro/getting-started/ui.html">Web UI</a>
					</li>

					<li<%= sidebar_current("gettingstarted-nextsteps") %>>
					<a href="/intro/getting-started/next-steps.html">Next Steps</a>
					</li>

				</ul>
				</li>
			</ul>
		</div>
	<% end %>

	<%= yield %>
<% end %>