added buffer clearing page for blender

src/docs/asciidoc/blender/blender_buffer_clearing.adoc

@@ -0,0 +1,35 @@
+= Blender Buffer Clearing
+:author: mitm
+:revnumber: 1.0
+:experimental:
+ifdef::env-github,env-browser[:outfilesuffix: .adoc]
+
+== Blender Buffer Clearing
+
+
+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.
+
+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.
+.  From the `Info` header select `menu:File[Open Recent > Your Saved File]`, to close and re-open your file.
+
+The exception to this rule is the `Linked Action` buffer, for animations, located in the `Dope Sheet Editor`.
+
+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.
+.  Change the editor type from `Dope Sheet` to `NLA Editor`. You will see the action listed.
+.  Click the btn:[Double Down Arrow] button next to the action to push it into the stack.
+.  Click the small start next to the track name.
+.  With the mouse inside the `NLA Track List`,  press kbd:[X] to delete both the track and strip.
+.  Save your file.
+.  From the `Info` header, select `menu:File[Open Recent > Your Saved File]`.
+.  Save your file again.
+.  From the `Info` header, select `menu:File[Open Recent > Your Saved File]` again.
+.  Change back to the `Dope Sheet Editor`.
+.  Click the btn:[Browse Action to be linked] button and you will see only the baked action remains and the buffer is now clear of unwanted actions. Select your action.
+.  Save your file.