diff --git a/usecases/TrussArc/trussarc.py b/usecases/TrussArc/trussarc.py
index c3af72e..e4c9fbf 100644
--- a/usecases/TrussArc/trussarc.py
+++ b/usecases/TrussArc/trussarc.py
@@ -5,6 +5,8 @@
 
 from amworkflow.api import amWorkflow as aw
 
+# python trussarc.py -n trussarc -gp thickness height -gpv 50 100 -mbt 10 -msf 5 -vtk
+
 @aw.engine.amworkflow() #("draft") # for visulaization
 def geometry_spawn(pm):
     #Define model by given file with points