diff --git a/doc/sphinx/source/overview.rst b/doc/sphinx/source/overview.rst
index b9ea5dc8f649bf71a0ffae5e03612c4063e3a284..4c3a38bcaf8f87cd435f8cbce82599fbc63e2c65 100644
--- a/doc/sphinx/source/overview.rst
+++ b/doc/sphinx/source/overview.rst
@@ -12,6 +12,22 @@ What is PythonicGcodeMachine ?
 
 PythonicGcodeMachine is a free and open source Python toolkit to work with RS-274 / ISO G-Code.
 
+PythonicGcodeMachine features:
+
+* a compliant RS-274 / ISO G-Code parser which is automatically generated from grammar and easy to
+  derivate to support other flavours,
+* an abstract syntax tree (AST) API,
+* some G-code flavour aspects are handled by YAML files for maximum flexibility,
+* tools to manipulate and validate G-code,
+* and more ..
+
+PythonicGcodeMachine supports these G-code flavours:
+
+* RS-274 **(full support)**
+* Fanuc *(partially)*
+* Heidenhain *(partially)*
+* LinuxCNC *(partially)*
+
 How is PythonicGcodeMachine licensed ?
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