Added headings to the buffer clearing section

src/docs/asciidoc/jme3/advanced/3d_models.adoc

@@ -70,9 +70,8 @@ You can now use the <<sdk#,jMonkeyEngine SDK>> to <<sdk/model_loader_and_viewer#
 
 Before exporting your Blender models, its is recommended that you clean the buffers of any unneeded `Action`, `Material`, `Texture` or `UV Image`. This is a straight forward process that only takes a few minutes. Failure to do so can lead you into a morass of problems, like having more than one AnimControl, duplicate materials and textures, wasted space from worthless images, just to mention a few potential troubles.
 
-You clear the Blender `Material`, `Texture`, `UV Image` buffers as follows:
-
-.  Open the editor or tab.
+Clearing Blender Material, Texture, UV Image Buffers::
+.  Open the `UV Image Editor`, `Material Tab` or `Texture Tab`.
 .  Select the btn:[Browse] button located next to the material, texture or UV Image name to load the item to be cleared.
 .  While holding kbd:[Shift] down, click the btn:[X] button, also known as the btn:[Unlink datablock] button, located next to the loaded item. An item that is unlinked will show a `0` before it when viewed by selecting the btn:[Browse] button and will not be saved if you exit Blender.
 .  Save your file.
@@ -80,8 +79,7 @@ You clear the Blender `Material`, `Texture`, `UV Image` buffers as follows:
 
 The exception to this rule is the `Linked Action` buffer, for animations, located in the `Dope Sheet Editor`. 
 
-To clear this buffer:
-
+Clearing The Linked Action Buffer::
 .  In the `Dope Sheet Editor`, change the context to `Action Editor`.
 .  Click the `Action to be linked` button and select the action you want cleared.
 .  Deselect the btn:[F] button to prevent it from saving.