Index: /trunk/psModules/src/concepts/pmConcepts.c
===================================================================
--- /trunk/psModules/src/concepts/pmConcepts.c	(revision 13499)
+++ /trunk/psModules/src/concepts/pmConcepts.c	(revision 13500)
@@ -873,13 +873,15 @@
             psMetadataItem *cellXwindow = psMetadataItemAllocS32("CELL.XWINDOW",
                                                                  "Start of cell window (pixels)", 0);
-            pmConceptRegister(cellXwindow, NULL, NULL, true, PM_FPA_LEVEL_CELL);
+            pmConceptRegister(cellXwindow, (pmConceptParseFunc)p_pmConceptParse_Positions,
+                              (pmConceptFormatFunc)p_pmConceptFormat_Positions, true, PM_FPA_LEVEL_CELL);
             psFree(cellXwindow);
         }
 
-        // CELL.YSIZE
+        // CELL.YWINDOW
         {
             psMetadataItem *cellYwindow = psMetadataItemAllocS32("CELL.YWINDOW",
                                                                  "Start of cell window (pixels)", 0);
-            pmConceptRegister(cellYwindow, NULL, NULL, true, PM_FPA_LEVEL_CELL);
+            pmConceptRegister(cellYwindow, (pmConceptParseFunc)p_pmConceptParse_Positions,
+                              (pmConceptFormatFunc)p_pmConceptFormat_Positions, true, PM_FPA_LEVEL_CELL);
             psFree(cellYwindow);
         }