Index: trunk/psModules/src/concepts/pmConcepts.c
===================================================================
--- trunk/psModules/src/concepts/pmConcepts.c	(revision 18177)
+++ trunk/psModules/src/concepts/pmConcepts.c	(revision 18178)
@@ -607,4 +607,5 @@
         conceptRegisterS32("CELL.XWINDOW", "Start of cell window (pixels)",p_pmConceptParse_Positions,p_pmConceptFormat_Positions, true, PM_FPA_LEVEL_CELL);
         conceptRegisterS32("CELL.YWINDOW", "Start of cell window (pixels)",p_pmConceptParse_Positions,p_pmConceptFormat_Positions, true, PM_FPA_LEVEL_CELL);
+        conceptRegisterF32("CELL.VARFACTOR", "Variance factor for conversion from large to small scales", NULL, NULL, true, PM_FPA_LEVEL_CELL);
 
         // CELL.TRIMSEC