Index: wflow-py/wflow/wflow_lib.py
===================================================================
diff -u -r5cf74bfdd89176533f27073418890cb292257f45 -rc3ba6c0bd01725069cb0e3f596fd5475847591c1
--- wflow-py/wflow/wflow_lib.py	(.../wflow_lib.py)	(revision 5cf74bfdd89176533f27073418890cb292257f45)
+++ wflow-py/wflow/wflow_lib.py	(.../wflow_lib.py)	(revision c3ba6c0bd01725069cb0e3f596fd5475847591c1)
@@ -709,7 +709,7 @@
 
 def sCurveSlope(X,a=0.0,b=1.0,c=1.0):
     """
-    First derivitive of the sCurve defined by a,b,c at point X
+    First derivative of the sCurve defined by a,b,c at point X
     
     Input:
         - X - value to calculate for
@@ -718,7 +718,7 @@
         - c
     
     Output:
-        - first derivitive (slope) of the curve at point X
+        - first derivative (slope) of the curve at point X
     """
     sc = sCurve(X,a=a,b=b,c=c)
     slope = sc * (1 - sc)