diff --git a/README-extensions.rst b/README-extensions.rst
index 22991c4..d321fa1 100644
--- a/README-extensions.rst
+++ b/README-extensions.rst
@@ -347,6 +347,8 @@
 
 The feature is expected to improve flexibility while sharing classes between your models.
 
+Please mpte that you can't use '..' without any calss following. If you want simply up in the sctructure, type in '..init'.
+
 It's a new feature use it with care and mind that using "relative syntax" lower traceability of
 your pillar composition.