diff --git a/docs/source/interfaces/Engineering Diffraction Test Guide.rst b/docs/source/interfaces/Engineering Diffraction Test Guide.rst
index 7fa834cee47ecb0ce3fa19876612b975b47cbb47..3cc0464e99c5b389477768fe3ef75a75cb20354b 100644
--- a/docs/source/interfaces/Engineering Diffraction Test Guide.rst	
+++ b/docs/source/interfaces/Engineering Diffraction Test Guide.rst	
@@ -156,7 +156,7 @@ Negative Testing Ideas
 - Change any unlocked dialog boxes whilst `Fit` runs
 
 
-.. _gsas-Engineering-Diffraction_test-ref:
+.. _gsas-fitting-Engineering-Diffraction_test-ref:
 
 GSAS Fitting
 ^^^^^^^^^^^^
@@ -168,7 +168,6 @@ NeXuS file (obtained from
 After a fit has run, the plot should look something like below:
 
 .. image:: ../images/EnggDiffExampleGSASOutput.png
-    :width: 500px
 
 If that fit output (the red line) is flat, or just follows the
 background of the data, the fit was not unsuccessful. Make sure you're
diff --git a/docs/source/interfaces/Engineering Diffraction.rst b/docs/source/interfaces/Engineering Diffraction.rst
index b8e83de05587b2e46c7c53a7366868dcfc586fb9..fa846f2dc0c094f972cc34cb097c4963ae9de276 100644
--- a/docs/source/interfaces/Engineering Diffraction.rst	
+++ b/docs/source/interfaces/Engineering Diffraction.rst	
@@ -478,9 +478,15 @@ The following parameters are also required:
 - **New GSAS-II Project** - GSASIIRefineFitPeaks creates a new
   ``.gpx`` project here, which can be opened and inspected from the
   GSAS-II GUI
-- **GSAS-II Installation Directory** - you must have a version of
-  GSAS-II from at least **February 2018** to use the GUI. See
-  :ref:`Installing_GSASII` for how to install a compatible version
+- **GSAS-II Installation Directory**
+
+  - This is the directory containing the GSAS-II executables and
+    Python libraries. In particular, it must contain
+    ``GSASIIscriptable.py``. This directory will normally be called
+    `GSASII`, if GSAS-II was installed normally
+  - You must have a version of GSAS-II from at least **February 2018**
+    to use the GUI. See :ref:`Installing_GSASII` for how to install a
+    compatible version
 - **Refinement method** - can either be **Pawley** or
   **Rietveld**. Pawley refinement is currently under development, so
   Rietveld is recommended.