Index: /trunk/psastro/src/psastroLoadRefstars.c
===================================================================
--- /trunk/psastro/src/psastroLoadRefstars.c	(revision 34966)
+++ /trunk/psastro/src/psastroLoadRefstars.c	(revision 34967)
@@ -363,5 +363,5 @@
     if (!status) ESCAPE ("missing DVO.GETSTAR.MIN.MAG.INST");
 
-    // if non zero override the zero point for the photcode (for stacks)
+    // if non zero override the zero point in the PHOTCODE.DATA with this value
     float fixedzeropt = psMetadataLookupF32(&status, recipe, "DVO.GETSTAR.FIXED.ZEROPT");
 
@@ -395,5 +395,5 @@
         }
         if (fixedzeropt != 0.0) {
-            // override the recipe's zero point with the fixed value (for stacks)
+            // override the recipe's zero point with the fixed value (used for stacks)
             zeropt = fixedzeropt;
         }