diff -r d42b6cf00fa6 -r c507c363625e graphics/GraphicCommons.py
--- a/graphics/GraphicCommons.py	Fri Sep 29 15:36:33 2017 +0300
+++ b/graphics/GraphicCommons.py	Fri Sep 29 16:26:15 2017 +0300
@@ -34,12 +34,10 @@
 
 # -------------------------------------------------------------------------------
 #                               Common constants
+#
+#            Definition of constants for dimensions of graphic elements
 # -------------------------------------------------------------------------------
 
-"""
-Definition of constants for dimensions of graphic elements
-"""
-
 # FBD and SFC constants
 MIN_MOVE = 5                            # Minimum move before starting a element dragging
 CONNECTOR_SIZE = 8                      # Size of connectors
@@ -128,10 +126,9 @@
     return int(xround * n)
 
 
-"""
-Basic vector operations for calculate wire points
-"""
-
+# -------------------------------------------------------------------------------
+# Basic vector operations for calculate wire points
+# -------------------------------------------------------------------------------
 
 def vector(p1, p2, normal=True):
     """