From 71bfed38fb12fe9f5b8fab7ced55a20bf0441666 Mon Sep 17 00:00:00 2001
From: Paul Romano <paul.k.romano@gmail.com>
Date: Tue, 10 Sep 2013 22:34:22 -0400
Subject: [PATCH] Add description of <threads> element in user's guide.

---
 docs/source/usersguide/input.rst | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/docs/source/usersguide/input.rst b/docs/source/usersguide/input.rst
index d9b43c8214..3ce8934108 100644
--- a/docs/source/usersguide/input.rst
+++ b/docs/source/usersguide/input.rst
@@ -381,6 +381,14 @@ survival biasing, otherwise known as implicit capture or absorption.
 
 .. _trace:
 
+``<threads>`` Element
+---------------------
+
+The ``<threads>`` element indicates the number of OpenMP threads to be used for
+a simulation. It has no attributes and accept a positive integer value.
+
+  *Default*: None (Determined by environment variable :envvar:`OMP_NUM_THREADS`)
+
 ``<trace>`` Element
 -------------------