Update _index.md

Author: Adam Dupaski

content/en/docs/refguide/modeling/app-explorer/app/_index.md

@@ -2,47 +2,45 @@
 title: "App"
 url: /refguide/app/
 weight: 10
-tags: ["studio pro", "app"]
+tags: ["studio pro", "app", "settings", "navigation", "system texts", "export documentation"]
 aliases:
     - /refguide/project/
 #If moving or renaming this doc file, implement a temporary redirect and let the respective team know they should update the URL in the product. See Mapping to Products for more details.
 ---
 
 ## 1 Introduction
 
-A Mendix app consists of app-level documents and a number of modules. Each module can contain many documents. At the app level, there are some settings and documents that apply to your app as a whole. For example, navigation is an app-level document; the menu bar is app-wide and can refer to functionality in all modules. Most documents, however, live at the level of a [module](/refguide/modules/).
+A Mendix app consists of app-level documents and a number of modules. Each module can contain many documents. At the app level, there are some settings and documents that apply to your app as a whole. For example, navigation is an app-level document, and the menu bar is app-wide and can refer to functionality in all modules. However, most documents live at the level of a [module](/refguide/modules/).
 
 ## 2 Settings
 
-App settings include the languages for the end-user, app directory and database and server settings.
+Clicking **Settings** opens a dialog box with settings for the end-user languages, the app directory, and the database and server.
 
-See [App Settings](/refguide/app-settings/).
+For more information, see [App Settings](/refguide/app-settings/).
 
 ## 3 Security
 
-At the app level you can change the security level, manage user roles and manage administrator and anonymous user access.
+At the app level, you can change the **Security** level, manage user roles, and manage administrator and anonymous user access.
 
-See [App Security](/refguide/app-security/).
+For more information, see [App Security](/refguide/app-security/).
 
 ## 4 Navigation
 
-In navigation you can configure the menu bar and navigation tree for your application. Also you can specify what the home page is, as in, the page you see right after signing in.
+In **Navigation**, you can configure the menu bar and navigation tree for your app. You can also specify what the **Home page** is (meaning, the page you see right after signing in).
 
-See [Navigation](/refguide/navigation/).
+For more information, see [Navigation](/refguide/navigation/).
 
 ## 5 System Texts
 
-System texts are texts like information and error messages that are produced by the server or the client. You can translate these texts so that they appear in the preferred language of the user.
+**System texts** are texts like information and error messages that are produced by the server or the client. You can translate these texts so that they appear in the preferred language of the user.
 
-See [System Texts](/refguide/system-texts/).
+For more information, see [System Texts](/refguide/system-texts/).
 
-## 6 Advanced
+## 6 Export Documentation
 
-### Export Documentation
+Right-clicking the **App** allows you to export documentation. This exports an HTML file with all the documents in your app and their documentation.
 
-Right clicking on the app level allows you to export your documentation. This will export an HTML file with all documents in your app and their documentation.
-
-## 6 Read More
+## 7 Read More
 
 * [Modules](/refguide/modules/)
 * [Security](/refguide/security/)