Per P0 reqs add launch pts + make download obvious. Also misc cpy edits.

native_client_sdk/doc_generated/devguide/coding/url-loading.html

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 <section id="url-loading">
 <span id="devguide-coding-url-loading"></span><h1 id="url-loading"><span id="devguide-coding-url-loading"></span>URL Loading</h1>
 <div class="contents local" id="contents" style="display: none">
 <ul class="small-gap">
 <li><a class="reference internal" href="#introduction" id="id1">Introduction</a></li>
 <li><a class="reference internal" href="#reference-information" id="id2">Reference information</a></li>
 <li><a class="reference internal" href="#background" id="id3">Background</a></li>
 <li><p class="first"><a class="reference internal" href="#the-url-loader-example" id="id4">The <code>url_loader</code> example</a></p>
 <ul class="small-gap">
 <li><a class="reference internal" href="#url-loading-overview" id="id5">URL loading overview</a></li>
 </ul>
 </li>
 <li><p class="first"><a class="reference internal" href="#url-loader-deep-dive" id="id6"><code>url_loader</code> deep dive</a></p>
 <ul class="small-gap">
 <li><a class="reference internal" href="#setting-up-the-request" id="id7">Setting up the request</a></li>
 <li><a class="reference internal" href="#downloading-the-data" id="id8">Downloading the data</a></li>
 <li><a class="reference internal" href="#displaying-a-result" id="id9">Displaying a result</a></li>
 </ul>
 </li>
 </ul>
 
 </div><section id="introduction">
 <h2 id="introduction">Introduction</h2>
-<p>This chapter describes how to use the <a class="reference external" href="/native-client/pepper_stable/cpp/classpp_1_1_u_r_l_loader">URLLoader API</a> to load resources
+<p>This section describes how to use the <a class="reference external" href="/native-client/pepper_stable/cpp/classpp_1_1_u_r_l_loader">URLLoader API</a> to load resources
 such as images and sound files from a server into your application.</p>
-<p>The example discussed in this chapter is included in the SDK in the directory
+<p>The example discussed in this section is included in the SDK in the directory
 <code>examples/api/url_loader</code>.</p>
 </section><section id="reference-information">
 <h2 id="reference-information">Reference information</h2>
 <p>For reference information related to loading data from URLs, see the
 following documentation:</p>
 <ul class="small-gap">
 <li><a class="reference external" href="/native-client/pepper_stable/cpp/url__loader_8h">url_loader.h</a> - Contains
 <code>URLLoader</code> class for loading data from URLs</li>
 <li><a class="reference external" href="/native-client/pepper_stable/cpp/url__request__info_8h">url_request_info.h</a> - Contains
 <code>URLRequest</code> class for creating and manipulating URL requests</li>
 <li><a class="reference external" href="/native-client/pepper_stable/cpp/url__response__info_8h">url_response_info.h</a> - Contains
 <code>URLResponse</code> class for examaning URL responses</li>
 </ul>
 </section><section id="background">
 <h2 id="background">Background</h2>
 <p>When a user launches your Native Client web application, Chrome downloads and
 caches your application&#8217;s HTML file, manifest file (.nmf), and Native Client
 module (.pexe or .nexe). If your application needs additional assets, such as
 images and sound files, it must explicitly load those assets. You can use the
-Pepper APIs described in this chapter to load assets from a URL into your
+Pepper APIs described in this section to load assets from a URL into your
 application.</p>
 <p>After you&#8217;ve loaded assets into your application, Chrome will cache those
 assets. To avoid being at the whim of the Chrome cache, however, you may want
 to use the <a class="reference external" href="/native-client/pepper_stable/cpp/classpp_1_1_file_i_o">Pepper FileIO API</a> to write those assets
 to a persistent, sandboxed location on the user&#8217;s file system.</p>
 </section><section id="the-url-loader-example">
 <h2 id="the-url-loader-example">The <code>url_loader</code> example</h2>
 <p>The SDK includes an example called <code>url_loader</code> demonstrating downloading
 files from a server. This example has these primary files:</p>
 <ul class="small-gap">
@@ skipping 162 matching lines @@
 error or <code>PP_OK</code>.</p>
 </section><section id="displaying-a-result">
 <h3 id="displaying-a-result">Displaying a result</h3>
 <p>OnRead calls <code>ReportResultAndDie</code> when either an error or <code>PP_OK</code> is
 returned to indicate streaming of file is complete. <code>ReportResultAndDie</code> then
 calls <code>ReportResult,</code> which calls <code>PostMessage</code> to send the result back to
 the HTML page.</p>
 </section></section></section>
 
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