First commit - comment how to in code

Comment how to in code p1

source/fusiondirectory/development/documentation/PHPDoc.rst

+Doxygen
+=======
+
+We are using a tool named doxygen which is fantastic to read documented code and offers a visual
+reprensentation of the interaction of classes and methods.
+
+If well documented, the visuals helps to quicker understand the codes.
+
+How to document your code
+-------------------------
+
+**Within your methods**
+
+You may comment your code inline above your line of code in order to make a clear message on what/why/how
+your below code is performing.
+
+**Above your methods**
+
+We use PHPdoc to get an harmonious documentation withing the code.
+It basically start like this :
+/**
+* Your comment here.
+*/
+
+Within that comment block we defined : variables and return types.
+We mandate our developpers to use strict type and we enforce it in php 8.2+
+
+On tope of your
\ No newline at end of file

source/fusiondirectory/development/documentation/index.rst

+Writing documentation within your code
+=======================================
+
+You can properly write documentation within your code.
+This is our guidelines
+
+.. toctree::
+   :maxdepth: 2
+
+   PHPDoc
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source/fusiondirectory/development/index.rst

@@ -9,3 +9,4 @@ Development
    codingstyle/index.rst
    writeplugin/index.rst   
    api/index.rst
+   documentation/index.rst