Add data-path restriction to tutorial, part 2.

native_client_sdk/doc_generated/devguide/tutorial/tutorial-part2.html

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 <section id="c-tutorial-getting-started-part-2">
 <span id="tutorial2"></span><h1 id="c-tutorial-getting-started-part-2"><span id="tutorial2"></span>C++ Tutorial: Getting Started (Part 2)</h1>
 <div class="contents local" id="contents" style="display: none">
 <ul class="small-gap">
 <li><a class="reference internal" href="#overview" id="id1">Overview</a></li>
 <li><p class="first"><a class="reference internal" href="#using-the-native-client-sdk-build-system" id="id2">Using the Native Client SDK build system</a></p>
 <ul class="small-gap">
 <li><a class="reference internal" href="#simplifying-the-makefile" id="id3">Simplifying the Makefile</a></li>
@@ skipping 234 matching lines @@
 <pre class="prettyprint">
 &lt;body data-name=&quot;part2&quot;
     data-tools=&quot;newlib glibc pnacl&quot;
     data-configs=&quot;Debug Release&quot;
     data-path=&quot;{tc}/{config}&quot;&gt;
 ...
 </pre>
 <p><code>common.js</code> will read these data attributes to allow you to load the same
 example with different toolchains by changing the URL&#8217;s <a class="reference external" href="http://en.wikipedia.org/wiki/Query_string">query string</a>. For example, you can load the
 glibc Debug version of this example by navigating to
-<code>index.html?tc=glibc&amp;config=Debug</code>.</p>
+<code>index.html?tc=glibc&amp;config=Debug</code>.  Path URI&#8217;s such as <code>../</code>, for example
+do not work for either the data-path parameter or its corresponding query
+string.</p>
 <p>Next, we remove the <code>embed</code> element that is described in HTML. This will be
 automatically added for us by <code>common.js</code>, based on the current
 toolchain/configuration combination:</p>
 <pre class="prettyprint">
 &lt;!--
 Just as in part1, the &lt;embed&gt; element will be wrapped inside the &lt;div&gt;
 element with the id &quot;listener&quot;. In part1, the embed was specified in HTML,
 here the common.js module creates a new &lt;embed&gt; element and adds it to the
 &lt;div&gt; for us.
 --&gt;
@@ skipping 153 matching lines @@
 // This function is called by common.js when a message is received from the
 // NaCl module.
 function handleMessage(message) {
   var logEl = document.getElementById('log');
   logEl.textContent += message.data;
 }
 </pre>
 </section>
 
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