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+# Class templates
+
+Class templates are a way to encapsulate and reuse AnyScript code. Class templates are used 
+in many parts of the model repository to make the code more readable and easier to maintain.
+
+A simple class template which creates a reference frame which is visible by default:
+```{code-block} AnyScriptDoc
+#class_template MyClassTemplate(__CLASS__=AnyRefNode, DRAW_NODE = Off) 
+{
+   #var sRel = {0,0,0};
+   #var ARel = eye(3);    
+   viewRefFrame = {
+      #var Visible = On;
+   };
+   #if DRAW_NODE == On
+   AnyDrawNode DrawNode = {};
+   #endif
+};
+```
+
+The class template can then be used to create a `AnyRefNode`:
+
+```{code-block} AnyScriptDoc
+MyClassTemplate MyNode(DRAW_NODE=On) = {
+   sRel = {1,1,0};
+};
+```
+
+Many of the class templates in the model repository are also useful for the users when building
+models. 
+
+This page contain a list of all the documented class templates in the model repository.
+
+## List of class templates
+
+```{toctree}
+:includehidden: true
+:maxdepth: 0
+:glob:
+
+*-toc
+```
+