From 6e72f3430b34f2bf61d8db9962f4c8c48d21fc3c Mon Sep 17 00:00:00 2001
From: Alice Russell <Alice.Russell@tessella.com>
Date: Thu, 5 Mar 2020 18:11:10 +0000
Subject: [PATCH] Re #16480 add documentation for UserFunctionMD

---
 .../fitting/fitfunctions/UserFunctionMD.rst   | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 docs/source/fitting/fitfunctions/UserFunctionMD.rst

diff --git a/docs/source/fitting/fitfunctions/UserFunctionMD.rst b/docs/source/fitting/fitfunctions/UserFunctionMD.rst
new file mode 100644
index 00000000000..b6b58566f76
--- /dev/null
+++ b/docs/source/fitting/fitfunctions/UserFunctionMD.rst
@@ -0,0 +1,26 @@
+.. _func-UserFunctionMD:
+
+==============
+UserFunctionMD
+==============
+
+.. index:: UserFunctionMD
+
+Description
+-----------
+
+A UserFunctionMD is the multi-dimensional equivalent of :ref:`UserFunction <func-UserFunction>`. It is defined by a string formula.
+The formula is assigned by setting string attribute Formula:
+
+`` "name=UserFunctionMD,Formula=a + y + (b + 0.1*y) * x, a=0, b=2"``
+
+The fitting parameters become defined only after the Formula attribute is set that is why Formula must
+go first in UserFunctionMD definition.
+
+.. attributes::
+
+.. properties::
+
+.. categories::
+
+.. sourcelink::
\ No newline at end of file
-- 
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