--- MITgcm/model/inc/CPP_OPTIONS.h	2001/03/06 16:17:05	1.16
+++ MITgcm/model/inc/CPP_OPTIONS.h	2001/05/29 14:01:36	1.18
@@ -1,5 +1,13 @@
-C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.16 2001/03/06 16:17:05 jmc Exp $
+C $Header: /home/ubuntu/mnt/e9_copy/MITgcm/model/inc/CPP_OPTIONS.h,v 1.18 2001/05/29 14:01:36 adcroft Exp $
 C $Name:  $
+
+  These lines are here to deliberately cause a compile-time error.
+  If you see these lines in your .F files or the compiler shows them
+  as an error then it means you have not placed your configuration
+  files in the appropriate place.
+  You need to place you own copy of CPP_OPTIONS.h in the include
+  path for the model.
+
 C
 
 C 
@@ -118,6 +126,14 @@
 C   instead of the "virtual salt flux"
 #undef  USE_NATURAL_BCS
 
+C o Use "Exact Convervation" of fluid in Free-Surface formulation
+C   so that d/dt(eta) is exactly equal to - Div.Transport
+#undef EXACT_CONSERV
+
+C o Allow the use of Non-Linear Free-Surface formulation
+C   this implies that surface thickness (hFactors) vary with time
+#undef NONLIN_FRSURF
+
 C o Use "OLD" UV discretisation near boundaries (*not* recommended)
 C   Note - only works with  #undef NO_SLIP_LATERAL  in calc_mom_rhs.F
 C          because the old code did not have no-slip BCs