Index: branches/2dbias/psModules/src/detrend/pmOverscan.c
===================================================================
--- branches/2dbias/psModules/src/detrend/pmOverscan.c	(revision 42719)
+++ branches/2dbias/psModules/src/detrend/pmOverscan.c	(revision 42723)
@@ -185,4 +185,5 @@
 		psListIterator *iter = psListIteratorAlloc(overscans, PS_LIST_HEAD, false); // Iterator
 		psImage *overscan = NULL;													// Overscan image from iterator
+		// XXX HG: investigate whether the y-overscan is being used or the x-overscan
 		while ((overscan = psListGetAndIncrement(iter)))
 		{