Index: trunk/psModules/src/camera/pmFPAfileDefine.c
===================================================================
--- trunk/psModules/src/camera/pmFPAfileDefine.c	(revision 12520)
+++ trunk/psModules/src/camera/pmFPAfileDefine.c	(revision 12557)
@@ -284,4 +284,5 @@
 
     // load the header of the first image
+    // EXTWORD (fits->extword) is not relevant to the PHU
     fits = psFitsOpen (realName, "r");
     if (!fits) {