diff --git a/script/local.py b/script/local.py
index 6767f1d..d083fff 100644
--- a/script/local.py
+++ b/script/local.py
@@ -17,6 +17,9 @@ crystal.setTrustedMonitor(True)
 
 
 def setup_brag_plot(auto=True):
+    """
+    Defines plot range so that bragg motor using external encoder will be plotted
+    """
     if auto:
         setup_plotting(range = "auto")    
     else: