diff --git a/addons/io_scene_swbf_msh/__init__.py b/addons/io_scene_swbf_msh/__init__.py
index 2675489..04fcaf6 100644
--- a/addons/io_scene_swbf_msh/__init__.py
+++ b/addons/io_scene_swbf_msh/__init__.py
@@ -207,7 +207,7 @@ class FillSWBFMaterialProperties(bpy.types.Operator):
     bl_label = "Fill SWBF Material Properties"
     bl_description = ("Fill in SWBF properties of all materials used by selected objects.\n"
                 "Only considers materials that use nodes.\n" 
-                "Please see 'Materials Operators' in the docs for more details.")
+                "Please see 'Materials > Materials Operators' in the docs for more details.")
 
     def execute(self, context):
 
diff --git a/docs/images/mat_fill_op.png b/docs/images/mat_fill_op.png
new file mode 100644
index 0000000..3367776
Binary files /dev/null and b/docs/images/mat_fill_op.png differ
diff --git a/docs/reference_manual.md b/docs/reference_manual.md
index 580ba96..c978283 100644
--- a/docs/reference_manual.md
+++ b/docs/reference_manual.md
@@ -24,6 +24,7 @@
   + [Materials.Flags](#materialsflags)
   + [Materials.Data](#materialsdata)
   + [Materials.Texture Maps](#materialstexture-maps)
+  + [Materials Operators](#materials-operators)
 - [Skeletons and Skinning](#skeletons-and-skinning)
   + [XSI vs Blender](#xsi-vs-blender)
   + [Example Skin Hierarchy](#example-skin-hierarchy)
@@ -575,6 +576,14 @@ Environment map for the material. Used to provide static reflections for the mod
 Distortion maps control how Refractive materials distort the scene behind them. Should be a Normal Map with '-forceformat v8u8' in it's '.tga.option' file. See Appendix .tga.option Files.
 
 
+### Materials Operators
+
+#### Fill SWBF Properties
+Fills in SWBF properties of each material used by a currently selected object.  This operator will only work with materials that have ```Use Nodes``` enabled and will just fill in the Diffuse Map property with the name of the image used by the material's Principled BSDF node.  
+
+It is used by selecting the relevant objects and choosing `SWBF` > `Fill SWBF Material Properties` in the `Object Context` (right-click) menu ![Menu Entry](images/mat_fill_op.png)
+
+