--- MITgcm/doc/tag-index	2004/12/06 06:08:24	1.405
+++ MITgcm/doc/tag-index	2004/12/10 20:10:46	1.409
@@ -1,8 +1,17 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.405 2004/12/06 06:08:24 dimitri Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.409 2004/12/10 20:10:46 heimbach Exp $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+checkpoint57a_pre
+o some modifs in tools/build_options for sunos
+o call ctrl_pack for ctrl at end for optimcycle=0
+
+checkpoint57
+o add horizontal bi-harmonic viscosity for vertical velocity
+  - new parameter viscA4W (defaults to viscA4)
+  - affects only non-hydrostatic code
+  - to be done: no-slip lateral boundary conditions
 o switch back to "sflux = sflux - runoff" in exf_getforcing.F
 o implement Implicit Vertical advection for pTracers
 o depth convergence accelerator: replace deltaTtracer by dTtracerLev(k)
@@ -13,6 +22,8 @@
   and include in natl_box_adjoint
 o untangle a few ifdefs related to cost, ctrl, autodiff
   untangel a few ALLOW_ECCO_OPTIMIZATION
+o Apply Cooper & Haines representative estimates also at sub-surface (k=Nr)
+  (theta2, salt2 in ecco_cost_weights)
 
 checkpoint56c_post
 o OBCS as control variables