1 files changed, 35 insertions, 6 deletions
diff --git a/demos/quickstart/protected/pages/Fundamentals/Applications.page b/demos/quickstart/protected/pages/Fundamentals/Applications.page
index 0a3028c5..c64a9ea4 100644
--- a/demos/quickstart/protected/pages/Fundamentals/Applications.page
+++ b/demos/quickstart/protected/pages/Fundamentals/Applications.page
@@ -2,13 +2,10 @@
 
 <h1>Applications</h1>
 <p>
-An application is an instance of <code>TApplication</code> or its derived class. Each PRADO application consists of a single application instance, one or several services, and some modules. For applications providing the page service (true for nearly all applications), they also contain one or several pages.
+An application is an instance of <code>TApplication</code> or its derived class. It manages modules that provide different functionalities and are loaded when needed. It provides services to end-users. It is the central place to store various parameters used in an application. In a PRADO application, the application instance is the only object that is globally accessible via <code>Prado::getApplication()</code> function call.
 </p>
 <p>
-The application instance is the only object that is accessible globally via <code>Prado::getApplication()</code> function call. It manages modules that provide different functionalities and are loaded when needed. It holds services that are available to end-users. An application instance may be configured via <a href="?page=Configurations.AppConfig">application configurations</a>.
-</p>
-<p>
-An application instance is usually created in an entry script in a PRADO application, as shown in the following,
+Applications are configured via <a href="?page=Configurations.AppConfig">application configurations</a>. They are usually created entry scripts like the following,
 <pre class="source">
 require_once('/path/to/prado.php');
 $application = new TApplication;
@@ -17,9 +14,41 @@ $application-&gt;run();
 where the method <code>run()</code> starts the application to handle user requests.
 </p>
 
+<h2>Directory Organization</h2>
+<p>
+A minimal PRADO application contains two files: an entry file and a page template file. They must be organized as follows,
+<img src="<%~directory.gif%>" />
+<ul>
+<li><code>wwwroot</code> - Web document root or sub-directory.</li>
+<li><code>index.php</code> - entry script of the PRADO application.</li>
+<li><code>assets</code> - directory storing published private files. See <a href="?page=Advanced.Assets">assets</a> section.</li>
+<li><code>protected</code> - application base path storing application data and private script files. This directory should be configured inaccessible to Web-inaccessible, or it may be located outside of Web directories.</li>
+<li><code>runtime</code> - application runtime storage path. This directory is used by PRADO to store application runtime information, such as application state, cached data, etc.</li>
+<li><code>pages</code> - base path storing all PRADO pages. See <a href="?page=Fundamentals.Services">services</a> section.</li>
+<li><code>Home.page</code> - default page returned when users do not explicitly specify the page requested. This is a page template file. The file name without suffix is the page name. The page class is <code>TPage</code>. If there is also a class file <code>Home.php</code>, the page class becomes <code>Home</code>.</li>
+</ul>
+</p>
+<p>
+A product PRADO application usually needs more files. It may include an application configuration file named <code>application.xml</code> under the application base path <code>protected</code>. The pages may be organized in directories, some of which may contain page configuration files named <code>config.xml</code>. Fore more details, please see <a href="?page=Configurations.Overview">configurations</a> section.
+</p>
+
+<h2>Application Deployment</h2>
+<p>
+Deploying a PRADO application mainly involves copying directories. For example, to deploy the above minimal application to another server, follow the following steps,
+<ol>
+<li>Copy the content under <code>wwwroot</code> to a Web-accessible directory on the new server.</li>
+<li>Modify the entry script file <code>index.php</code> so that it includes correctly the <code>prado.php</code> file.</li>
+<li>Remove all content under <code>assets</code> and <code>runtime</code> directories and make sure both directories are writable by the Web server process.</li>
+</ol>
+</p>
+
 <h2>Application Lifecycles</h2>
 <p>
-TBD
+Like page lifecycles, an application also has lifecycles. Application modules can register for the lifecycle events. When the application reaches a particular lifecycle and raises the corresponding event, the registered module methods are invoked automatically. Modules included in the PRADO release, such as <code>TAuthManager</code>, are using this way to accomplish their goals.
+</p>
+<p>
+The application lifecycles can be depicted as follows,
 </p>
+<img src="<%~applifecycles.gif%>" />
 
 </com:TContent>
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