[DOK] Adds information regarding contributing

Documentation/Contribute/Index.rst

@@ -0,0 +1,41 @@
+.. include:: ../Includes.txt
+
+
+.. _contribute:
+
+==========
+Contribute
+==========
+
+To keep the quality development respects the guidelines established by TYPO3 found in the `Core API Reference
+<https://docs.typo3.org/typo3cms/CoreApiReference/>`__.
+
+Prefixes
+========
+
+The following prefixes are used:
+
+====== ====================== =========================================================================================
+Prefix Meaning                Description
+====== ====================== =========================================================================================
+pp     Pizpalue               Base prefix
+ppc    Pizpalue complement    Mainly used for classes complementing other classes.
+ce     Content element        Used in conjunction with content elements
+====== ====================== =========================================================================================
+
+Examples
+--------
+
+**SCSS**
+
+.. code-block:: css
+   pp-demo-item {
+      border: blue 1px solid;
+      &.ppc-right {
+         border-right: green 3px solid;
+      }
+   }
+
+In the above example the class :css:`ppc-right` complements the class :css:`pp-demo-item`. The complementing classes
+help to be more specific and less exhaustive (alternatively to :css:`ppc-right` one might have used
+:css:`pp-demo-item-right`). They should only be used in the context of other classes.

Documentation/Index.rst

@@ -59,3 +59,4 @@ Table of Contents
    User/Index
    Changelog/Index
    Faq/Index
+   Contribute/Index