diff --git a/readme.md b/readme.md
index 27f984e..ade660c 100644
--- a/readme.md
+++ b/readme.md
@@ -1,3 +1,11 @@
 # Christoph Cullmann's Layout
 
+Derived from the default layout.
 
+Lower and raise layer like in default.
+
+QWERTY layer has home row modifiers.
+
+NAV layer with reverse-T cursors.
+
+CMD/FN layer for extras.
diff --git a/rules.mk b/rules.mk
index e69de29..e133235 100644
--- a/rules.mk
+++ b/rules.mk
@@ -0,0 +1,3 @@
+# less debugging features
+COMMAND_ENABLE = no
+CONSOLE_ENABLE = no