new TG4_DEBUG environment variable commented

diff --git a/AliGeant4/doc/README b/AliGeant4/doc/README
index f4743c2695e950b9ebdbfa06f3250faebe9bf21b..2db6b01733c1d49ffaf46d404861f87d9e0b12ef 100644 (file)
--- a/AliGeant4/doc/README
+++ b/AliGeant4/doc/README
@@ -74,6 +74,11 @@ Alice Geant4 related environment variables:
     if set: only geantino or charged geantino can be shooted  
     Categories affected: main
     Default: unset   
+
+  TG4_DEBUG
+    if set: checks for existence fStep, fTrack are performed in TG4StepManager 
+    Categories affected: event
+    Default: unset   
     
 
   Default setting: