Index: branches/eam_branches/relphot.20210521/src/relphot.c
===================================================================
--- branches/eam_branches/relphot.20210521/src/relphot.c	(revision 41606)
+++ branches/eam_branches/relphot.20210521/src/relphot.c	(revision 41623)
@@ -34,5 +34,5 @@
   switch (mode) {
     case UPDATE_IMAGES:
-      // calculate zero points for images (may group my exposure [mosaic], night [tgroups]; may measure flat-correction)
+      // calculate zero points for images (may group by exposure [mosaic], night [tgroups]; may measure flat-correction)
       // IF CALLED WITH NLOOP == 0, DOES NOT LOAD bcatalog, just loads image table and generates ImageSubset.dat
       // If called with -update, calls reload_catalogs() just like apply_offsets
@@ -72,4 +72,6 @@
 	exit (2);
       }
+      // we do not need to load grid corrections here.  the value of
+      // GRID_MEANFILE, if specified, is passed to the clients
       reload_catalogs (skylist, 0, NULL);
       relphot_free (sky, skylist);