--- MITgcm/model/inc/CPP_OPTIONS.h	2006/04/05 15:42:14	1.35
+++ MITgcm/model/inc/CPP_OPTIONS.h	2007/01/09 23:27:43	1.37
@@ -1,4 +1,4 @@
-C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.35 2006/04/05 15:42:14 mlosch Exp $
+C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.37 2007/01/09 23:27:43 dimitri Exp $
 C $Name:  $
 
 #ifndef CPP_OPTIONS_H
@@ -46,6 +46,10 @@
 C   it is set/unset again in other header fields (e.g., GAD_OPTIONS.h).
 C   The definition of the flag is commented to avoid interference with
 C   such other header files.
+C   The preferred method is specifying a value for viscAhGrid or viscA4Grid
+C   in data which is then automatically scaled by the grid size;
+C   the old method of specifying viscAh/viscA4 and this flag is provided
+C   for completeness only (and for use with the adjoint).
 C#define ISOTROPIC_COS_SCALING
 
 C o This flag selects the form of COSINE(lat) scaling of bi-harmonic term.
@@ -63,6 +67,11 @@
 C          because the old code did not have no-slip BCs
 #undef  OLD_ADV_BCS
 
+C o Use LONG.bin, LATG.bin, etc., initialization for ini_curviliear_grid.F
+C   Default is to use "new" grid files (OLD_GRID_IO undef) but OLD_GRID_IO
+C   is still useful with, e.g., single-domain curvilinear configurations.
+#undef OLD_GRID_IO
+
 C o Execution environment support options
 #include "CPP_EEOPTIONS.h"