From c14680c26dd1f66a890beb18f023d806607ab2cd Mon Sep 17 00:00:00 2001
From: Shikhar Kumar <shikhark@mit.edu>
Date: Wed, 19 Dec 2018 02:24:42 -0500
Subject: [PATCH] Update documentation about C API dependence of CMFD and
 necessary import statements

---
 docs/source/pythonapi/base.rst | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/docs/source/pythonapi/base.rst b/docs/source/pythonapi/base.rst
index d3c53d173..f39421b28 100644
--- a/docs/source/pythonapi/base.rst
+++ b/docs/source/pythonapi/base.rst
@@ -203,7 +203,9 @@ Coarse Mesh Finite Difference Acceleration
 
 CMFD is implemented in OpenMC and allows users to accelerate fission source
 convergence during inactive neutron batches. To run CMFD, the CMFDRun class
-should be used.
+should be used, and :mod:`from openmc import cmfd` should be included at the
+top of the Python input file. Additionally, this class has a dependence on the
+C API.
 
 .. autosummary::
    :toctree: generated