diff --git a/reference/componere/book.xml b/reference/componere/book.xml
index 1ef0623fe3..8ae969d62d 100644
--- a/reference/componere/book.xml
+++ b/reference/componere/book.xml
@@ -1,15 +1,45 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- $Revision$ -->
 
-<book xml:id="book.componere" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink">
+<book xml:id="book.componere" xmlns="http://docbook.org/ns/docbook" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:phpdoc="http://php.net/ns/phpdoc" xmlns:xi="http://www.w3.org/2001/XInclude">
  <title>Componere</title>
  <titleabbrev>Componere</titleabbrev>
 
  <preface xml:id="intro.componere">
   &reftitle.intro;
   <para>
-   Componere is able to compose classes at runtime, and monkey patch objects.
+   Componere <subscript>(latin, English: compose)</subscript> targets production environments and provides an API for 
+   composition of classes, monkey patching, and casting.
   </para>
+   <formalpara>
+    <title>Composition:</title>
+    <para>
+     <classname>Componere\Definition</classname> is used to define (or redefine) a class at runtime; 
+     The class can then be registered, and in the case of redefinition it replaces the original class 
+     for as long as the <classname>Componere\Definition</classname> exists.
+     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.componere-definition')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[not(@role='procedural')])" />
+    </para>
+   </formalpara>
+
+   <formalpara>
+    <title>Patching:</title>
+    <para>
+     <classname>Componere\Patch</classname> is used to change the class of a specific instance of an object at runtime; 
+     Upon application the patch will remain applied for as long as the <classname>Componere\Patch</classname> exists, and can be reverted explicitly.
+     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('class.componere-patch')/db:refentry/db:refsect1[@role='description']/descendant::db:constructorsynopsis[not(@role='procedural')])" />
+    </para>
+  </formalpara>
+
+  <formalpara>
+    <title>Casting:</title>
+    <para>
+     <classname>Componere\</classname> casting functions can cast among user defined compatible types;
+     Where compatible means <classname>Type</classname> is contravariant or covariant with the class of <parameter>object</parameter>.
+     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('componere.cast')/db:refsect1[@role='description']/descendant::db:methodsynopsis)" />
+     <xi:include xpointer="xmlns(db=http://docbook.org/ns/docbook) xpointer(id('componere.cast_by_ref')/db:refsect1[@role='description']/descendant::db:methodsynopsis)" />
+    </para>
+  </formalpara>
+
  </preface>
 
  &reference.componere.setup;