It looks pretty much identical to 2007-06; "diff" would show the differences.  As you can see, it's just the figures that differ really, so if they are the same, then one page could be deleted, or else maybe just merge and have the figures for the two versions together?

```
--- screen-plate-well-2007-06.txt	2013-03-18 09:59:01.000000000 +0000
+++ screen-plate-well-2009-09.txt	2013-03-18 09:59:01.000000000 +0000
@@ -1,10 +1,10 @@
-Screen Plate Well 2007-06
+Screen Plate Well 2009-09
 =========================
 
-Information on Screen Plate Well. This was developed in conjunction with
-the June 2007 release of the OME-XML Model.
+This was developed in conjunction with the June 2007 release and updated
+for the September 2009 release of the OME-XML Model.
 
 The screen plate well model is designed to support high content
 screening. It is aimed at providing a flexible framework to organise the
@@ -164,10 +166,10 @@
 collection of individual WellSamples across the Plates collected between
 two time points.
 
-.. figure:: /images/formats/legacy/ScreenPlateWell/2007-06/Spw-structure.png
+.. figure:: /images/formats/legacy/ScreenPlateWell/2009-09/Spw-structure.png
    :align: center
    :alt: SPW structure
   
@@ -175,9 +177,9 @@
 inter-dependencies between the Screen branch and the Plate branch of the
 schema, as well as the ultimate link to Image.
 
-.. figure:: /images/formats/legacy/ScreenPlateWell/2007-06/Spw-structure-cross-linked.png
+.. figure:: /images/formats/legacy/ScreenPlateWell/2009-09/Spw-structure-cross-linked.png
    :align: center
-   :alt: SPW structure cross-linked
+   :alt: SPW structure cross linked
    
 Diagram showing sample file structure of the SPW Schema
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@@ -185,10 +187,10 @@
 This diagram shows how a typical file would be structured and what
 objects are normally contained inside each other.
 
-.. figure:: /images/formats/legacy/ScreenPlateWell/2007-06/Spw-sample.png
+.. figure:: /images/formats/legacy/ScreenPlateWell/2009-09/Spw-sample.png
    :align: center
-
-
+   :alt: SPW sample
+   
 Diagram showing sample file structure of the SPW Schema (cross-linked)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
@@ -199,5 +201,7 @@
 accomplished using unique IDs on objects and then References to these
 IDs from elsewhere in the file.
 
-.. figure:: /images/formats/legacy/ScreenPlateWell/2007-06/Spw-sample-crosslinked.png
+.. figure:: /images/formats/legacy/ScreenPlateWell/2009-09/Spw-sample-crosslinked.png
    :align: center
+   :alt: SPW sample cross linked
+
```