diff --git a/fecon236/rates/credit.py b/fecon236/rates/credit.py
index ad2950b..511882c 100644
--- a/fecon236/rates/credit.py
+++ b/fecon236/rates/credit.py
@@ -1,14 +1,21 @@
 #  Python Module for import                           Date : 2018-11-29
 #  vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=python : per PEP 0263
-'''
-_______________|  credit.py :: Credit risk module for fecon236
+"""Credit risk module for fecon236
 
-- For detailed derivation of Unified Credit Profile, creditprof(),
+- For detailed derivation of Unified Credit Profile, `creditprof`,
     see fecon235 notebook, https://git.io/creditprof
 
-CHANGE LOG  For LATEST version, see https://git.io/fecon236
-2018-11-29  Add creditprof().
-'''
+Notes
+-----
+For LATEST version, see https://git.io/fecon236
+
+
+Change Log
+----------
+
+* 2018-11-29  Add `creditprof`.
+
+"""
 
 from __future__ import absolute_import, print_function, division
 
@@ -19,10 +26,13 @@
 
 
 def creditprof():
-    '''Credit profile derived from mortgage and corporate credit spreads.'''
-    #  Derivation in fecon235/nb/fred-credit-spreads.ipynb
-    #  See https://git.io/creditprof
-    #  First, note the oldest start date common among all series herein:
+    """Credit profile derived from mortgage and corporate credit spreads.
+
+    Derivation in fecon235/nb/fred-credit-spreads.ipynb
+    See https://git.io/creditprof
+    First, note the oldest start date common among all series herein:
+    """
+
     start = '1991-08-30'
     #  ----- MORTGAGE CREDIT SPREAD
     #  Freddie Mac 15-Year Fixed Rate Mortgage v. Treasury 10-year bond.
diff --git a/fecon236/rates/fedfunds.py b/fecon236/rates/fedfunds.py
index 6bcb047..6d3be92 100644
--- a/fecon236/rates/fedfunds.py
+++ b/fecon236/rates/fedfunds.py
@@ -1,15 +1,21 @@
 #  Python Module for import                           Date : 2018-06-17
 #  vim: set fileencoding=utf-8 ff=unix tw=78 ai syn=python : per PEP 0263
-'''
-_______________|  fedfunds.py :: Fed Funds rate module for fecon236
+"""Fed Funds rate module for fecon236
 
-- For derivation of forefunds() which forecasts the Fed Funds rate,
+- For derivation of `forefunds` which forecasts the Fed Funds rate,
     see https://git.io/fedfunds
 
-CHANGE LOG  For LATEST version, see https://git.io/fecon236
-2018-06-17  Spin-off forefunds() from top.py.
-'''
+Notes
+-----
+For LATEST version, see https://git.io/fecon236
 
+
+Change Log
+----------
+
+* 2018-06-17  Spin-off `forefunds` from `top.py`.
+
+"""
 from __future__ import absolute_import, print_function, division
 
 from fecon236.util import system
@@ -19,9 +25,12 @@
 
 
 def forefunds(nearby='16m', distant='17m'):
-    '''Forecast distant Fed Funds rate using Eurodollar futures.'''
-    #  Derivation in fecon235/nb/qdl-libor-fed-funds.ipynb
-    #  See https://git.io/fedfunds
+    """Forecast distant Fed Funds rate using Eurodollar futures.
+
+    Derivation in fecon235/nb/qdl-libor-fed-funds.ipynb
+
+    See https://git.io/fedfunds
+    """
     ffer = get('DFF')
     #      ^Retrieve Fed Funds effective rate, daily since 1954.
     ffer_ema = ema(ffer['1981':], 0.0645)