Index: /trunk/ippToPsps/config/tables.DF.vot
===================================================================
--- /trunk/ippToPsps/config/tables.DF.vot	(revision 38776)
+++ /trunk/ippToPsps/config/tables.DF.vot	(revision 38777)
@@ -22,8 +22,8 @@
       </FIELD>
       <FIELD name="posImageID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
-	<DESCRIPTION>positive image identifier</DESCRIPTION>
+	<DESCRIPTION>Image identifier for the positive image.  For warp-stack difference images, this corresponds to the ForcedWarpToImage.forcedWarpID entry.</DESCRIPTION>
       </FIELD>
       <FIELD name="negImageID" arraysize="1" datatype="long" unit="dimensionless" default="NA">
-	<DESCRIPTION>negative image identifier</DESCRIPTION>
+	<DESCRIPTION>Image identifier for the negative image.  For warp-stack difference images, this corresponds to the StackMeta.stackMetaID entry.</DESCRIPTION>
       </FIELD>
       <FIELD name="tessID" arraysize="1" datatype="unsignedByte" unit="dimensionless" default="0">