diff --git a/validate_model.py b/validate_model.py
index 9b35b9b..9b1b878 100644
--- a/validate_model.py
+++ b/validate_model.py
@@ -1,4 +1,13 @@
 
+'''
+
+Validates the dynamical viability of a set of estimated parameter values.  Call
+pattern:
+
+python validate_model.py <output directory>
+
+'''
+
 from __future__ import division
 
 import os.path as pa
diff --git a/validate_single.py b/validate_single.py
index e6d013f..9bb2cea 100644
--- a/validate_single.py
+++ b/validate_single.py
@@ -1,4 +1,15 @@
 
+'''
+
+Validates the dynamical viability of a single set of estimated parameter
+values.  Call pattern:
+
+python validate_simply.py parameters_to_validate.npy
+
+This file should have behavior consistent with validate_model.py, but no
+guarantees.
+
+'''
 from __future__ import division
 
 import sys