{{+bindTo:partials.standard_nacl_article}} <section id="glossary"> <span id="id1"></span><h1 id="glossary"><span id="id1"></span>Glossary</h1> <p>This glossary defines terms and names commonly used throughout the Native Client documentation.</p> <dl class="docutils"> <dt>asynchronous programming</dt> <dd>In the asynchronous programming model, function calls are executed and return immediately without waiting for a response. Using this model, function calls are non-blocking; the web browser continues its main thread of execution and gets notified of asynchronous call completion through callbacks or some other mechanism.</dd> <dt>focus events</dt> <dd>Events that indicate whether certain parts of a web page are in or out of focus.</dd> <dt>input events</dt> <dd>Events that occur when an input device (such as keyboard or mouse) is used to interact with an module instance.</dd> <dt>instance</dt> <dd>A rectangle on a web page that is managed by a Native Client module (the rectangle can have <code>width=0</code> and <code>height=0</code>, which means that nothing is drawn on the page).</dd> <dt>manifest file</dt> <dd>A file containing metadata or information about accompanying files.</dd> <dt>message events</dt> <dd>Events used to pass data between JavaScript and the Native Client module (see the <a class="reference internal" href="/native-client/devguide/coding/message-system.html"><em>Messaging System</em></a> section).</dd> <dt>module</dt> <dd>Depending on context, “module” may mean one of two things. First, it may be a general short-term for for “Native Client module”—compiled C/C++ code produced with a Native Client toolchain (for example PNaCl). See <a class="reference internal" href="/native-client/overview.html#link-how-nacl-works"><em>How Native Client works</em></a> for more details. Second, it may refer to a concrete implementation of the <a class="reference external" href="/native-client/pepper_stable/cpp/classpp_1_1_module">pp::Module class</a> for some Native Client module.</dd> <dt>progress events</dt> <dd>Events generated by the Native Client runtime system during the module loading process.</dd> <dt>Var</dt> <dd>An object in a Native Client module that corresponds to a JavaScript variable.</dd> <dt>view change events</dt> <dd>Events that occur when a change in the browser affects the module instance (such as resizing the browser window or going to and from fullscreen mode).</dd> <dt>web workers</dt> <dd><a class="reference external" href="http://en.wikipedia.org/wiki/Web_Workers">Web workers</a> provide a mechanism for running heavy-weight JavaScript code on background threads so that the main web page can continue to respond to user interaction. Web pages interact with web workers by using <code>postMessage()</code> to send messages. The way a web page interacts with a Native Client module is analogous to the way it interacts with web workers.</dd> </dl> </section> {{/partials.standard_nacl_article}}