diff --git a/neuron/axon.md b/neuron/axon.md
index be03a85..c12daa6 100644
--- a/neuron/axon.md
+++ b/neuron/axon.md
@@ -57,17 +57,28 @@ container: AXON
 
 **G expression**:
 
-— tpc: PRE_Status_ms
+```tree
+
+- AP_ctx (from SOMA)
 
-- ctx%AP
 -- NTreleaseMax_ctx
+--- NTreleaseMaximum
+
+-- AP-CaClearanceHigh
+-- AP-CaClearanceMediumness
+
 --- ..
 
-— NOT AP_ctx:
-
-- RPShuttle_ctx
-- CaTracesNotEmpty_ctx
-- eCBNotEmpty_ctx
+- NOT AP_ctx:
+-- NotAP-CaClearance
+-- RPShuttle_ctx
+--- 
+-- CaTracesNotEmpty_ctx
+--- 
+-- eCBNotEmpty_ctx
+--- eCBClearance
+-- AP-CaClearanceHigh
+```
 
 ---