diff --git a/documentation/PerkinElmerDoc.html b/documentation/PerkinElmerDoc.html
index f25ec82..a7de537 100644
--- a/documentation/PerkinElmerDoc.html
+++ b/documentation/PerkinElmerDoc.html
@@ -10,7 +10,7 @@
     <h1>
       areaDetector PerkinElmer driver</h1>
     <h2>
-      August 9, 2011</h2>
+      December 3, 2011</h2>
     <h2>
       John Hammonds, Brian Tieman, Mark Rivers</h2>
     <h2>
@@ -35,16 +35,15 @@
       PerkinElmer</a>.</p>
   <p>
     The driver is based upon the XISL library provided by PerkinElmer. It only runs
-    on Microsoft Windows computers.
+    on Microsoft Windows computers.  It supports both 32-bit and 64-bit versions of Windows.
   </p>
   <p>
     This driver has been tested with the following detectors</p>
   <ul>
     <li>XRD0820 w/ XRD-FG PCI frame grabber</li>
     <li>XRD1621 w/ XRD-FGX PCI frame grabber</li>
-  </ul>
-  <p>
-    ADD ADDTIONAL INTRODUCTORY TEXT HERE.</p>
+  <li>XRD1621 w/ XRD-FGe Opto PCI-Express frame grabber</li>
+</ul>
   <p>
     This driver inherits from <a href="areaDetectorDoc.html#ADDriver">ADDriver</a>.
     It implements many of the parameters in <a href="areaDetectorDoxygenHTML/asyn_n_d_array_driver_8h.html">
@@ -58,8 +57,6 @@
     The following table describes how the PerkinElmer driver implements some of the
     standard driver parameters.
   </p>
-  <p>
-    DOCUMENT IMPLEMENTATION OF STANDARD DRIVER PARAMETERS IN THIS TABLE</p>
   <table border="1" cellpadding="2" cellspacing="2" style="text-align: left">
     <tbody>
       <tr>
@@ -81,7 +78,7 @@
         <td>
           $(P)$(R)NumImages</td>
         <td>
-          Controls the number of images to acquire when ADImageMode is ADImageMultiple.</td>
+          Controls the number of images to acquire when ADImageMode is Multiple or Average</td>
       </tr>
       <tr>
         <td>
@@ -92,7 +89,7 @@
         <td>
           When using Internal Triggers, this parameter controls the period between trigger
           pulses which will also be equal to the exposure time. This parameter is only updated
-          when the detector is initialized</td>
+          when the detector is initialized.</td>
       </tr>
       <tr>
         <td>
@@ -110,13 +107,26 @@
           </ul>
         </td>
       </tr>
-    </tbody>
+  <tr>
+    <td>
+      ADImageMode</td>
+    <td>
+      $(P)$(R)ImageMode<br />
+      $(P)$(R)ImageMode_RBV</td>
+    <td>
+      Sets the trigger mode for the detector. Options are:
+      <ul>
+        <li>Single</li>
+        <li>Multiple</li>
+        <li>Continuous</li>
+        <li>Average.  This mode is new for the Perkin Elmer.  It averages NumImages frames in
+        the hardware frame grabber.  It is useful when the total acquisition time is longer than
+        the 5 second maximum allowed in Internal trigger mode, etc.</li>
+      </ul>
+    </td>
+  </tr>
+</tbody>
   </table>
-  <p>
-    It is useful to use NDPluginROI to define an ROI containing the entire PerkinElmer
-    detector. The MaxValue_RBV PV in this ROI can be monitored to make sure that the
-    16-bit limit of 65,535 is not being approached in any pixel.
-  </p>
   <h2 id="Driver_parameters" style="text-align: left">
     PerkinElmer specific parameters</h2>
   <p>
@@ -237,7 +247,7 @@
         <td>
           r</td>
         <td>
-          Frame number from frame buffer for this image</td>
+          Frame number from the hardware frame buffer for this image.  Values go from 1 to 8.</td>
         <td>
           PE_FRAME_BUFFER_INDEX</td>
         <td>
@@ -253,7 +263,7 @@
         <td>
           r</td>
         <td>
-          Image number for this image in the collections sequence</td>
+          Image number for this image in the image buffer array.</td>
         <td>
           PE_IMAGE_NUMBER</td>
         <td>