Add missing doc at root

Author: e-marchand

Documentation/advanced-programming.md

@@ -0,0 +1,39 @@
+# Advanced programming with Javascript
+
+A 4D View Pro Area is a [Web Area form object](../FormObjects/webArea_overview.md) that uses the [embedded web rendering engine](../FormObjects/properties_WebArea.md#use-embedded-web-rendering-engine). As such, it behaves just like any other web area, and you can get it to execute Javascript code by calling the [`WA Evaluate Javascript`](../commands%20legacy/wa%20evaluate%20javascript.md) 4D command. 
+
+Since 4D View Pro is powered by the [SpreadJS spreadsheet solution](https://developer.mescius.com/spreadjs), you can also call SpreadJS Javascript methods in 4D View Pro areas.
+
+## Hands-on example: Hiding the Ribbon
+
+Since 4D View Pro is a web area, you can select a webpage element and modify its behavior using Javascript. The following example hides the spreadJS [Ribbon](./configuring.md#ribbon): 
+
+```4d
+//Button's object method
+
+var $js; $answer : Text
+
+$js:="document.getElementsByClassName('ribbon')[0].setAttribute('style','display: none');"
+
+$js+="window.dispatchEvent(new Event('resize'));"
+
+$answer:=WA Evaluate JavaScript(*; "ViewProArea"; $js)
+```
+
+## Calling SpreadJS Javascript methods
+
+You can tap into the SpreadJS library of Javascript methods and call them directly to control your spreadsheets. 
+
+4D has a built-in `Utils.spread` property that gives access to the spreadsheet document (also called workbook) inside the 4D View Pro area, making it simpler to call the SpreadJS [Workbook methods](https://developer.mescius.com/spreadjs/api/classes/GC.Spread.Sheets.Workbook).
+
+#### Example
+
+The following code undoes the last action in the spreadsheet:
+
+```4d
+WA Evaluate JavaScript(*; "ViewProArea"; "Utils.spread.undoManager().undo()")
+```
+
+## 4D View Pro Tips repository
+
+[4D-View-Pro-Tips](https://github.com/4d-depot/4D-View-Pro-Tips) is a GitHub repository that contains a project full of useful functions, allowing to manage floating pictures, sort columns or rows, create a custom culture, and much more! Feel free to clone it and experiment with the project.