Index: trunk/psModules/src/camera/pmFPAfileDefine.c
===================================================================
--- trunk/psModules/src/camera/pmFPAfileDefine.c	(revision 15217)
+++ trunk/psModules/src/camera/pmFPAfileDefine.c	(revision 15562)
@@ -438,4 +438,5 @@
                 return NULL;
             }
+	    // EXTWORD (fits->extword) is not relevant to the PHU
             fits = psFitsOpen (realName, "r");
             if (!fits) {
@@ -556,4 +557,5 @@
             return NULL;
         }
+	// EXTWORD (fits->extword) is not relevant to the PHU
         fits = psFitsOpen (realName, "r");
         if (!fits) {
@@ -665,4 +667,5 @@
     // associated each filename with an element of the FPA
     // save the association on file->names
+    // EXTWORD (fits->extword) is not relevant to the PHU
     fits = psFitsOpen (infiles->data[entry], "r");
     phu = psFitsReadHeader (NULL, fits);