--- MITgcm/doc/tag-index	2005/09/14 17:57:54	1.547
+++ MITgcm/doc/tag-index	2005/09/28 00:20:52	1.553
@@ -1,9 +1,31 @@
-$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.547 2005/09/14 17:57:54 edhill Exp $
+$Header: /home/ubuntu/mnt/e9_copy/MITgcm/doc/tag-index,v 1.553 2005/09/28 00:20:52 jmc Exp $
 $Name:  $
 
     Notes on tags used in MITgcmUV
     ==============================
 
+o minor change in averaging W (mom_vi_?_vertshear.F) that affects truncation
+  error; update output from global_ocean.cs32x15(+.thsice) & MLAdjust (all 5).
+o add brackets in multi-terms sum to get same truncation, independent of
+  the face number (manage to get exactly same value of gU,gV at the cs-edge)
+  affects several test. exp. Update global_ocean.cs32x15 (+.thsice).
+o Clean, new version of mom_calc_visc.  Adds a new feature, viscAhRemax
+  and viscA4Remax, which allow one to limit the minimum viscosity by specifying
+  a maximum grid-scale Reynolds number.  Also, changes all length calculations
+  in the case of grid anisotropy to geometric mean of dx**2 and dy**2.
+  Suggested values of viscosity parameters found in mom_calc_visc. 
+  Many new viscosity diagnostics available.
+
+checkpoint57s_post
+o Add clearing-house for viscosity calculations, mom_calc_visc and 
+  correct numerous bugs in LeithD and Smagorinsky discretizations.  
+  mom_calc_visc now allows for Smagorinsky, Leith and LeithD to be 
+  used simultaneously, and to be used in mom_vecinv and mom_fluxform. 
+  Mom_vecinv can be used with standard viscous calculation (mom_vi_hdissip.F)
+  and with Strain-Tension viscous term calculation (mom_hdissip.F).  
+  The Strain-Tension form is now called with useStrainTensonVisc=.true.
+  ViscAhStrain and viscAhTension are now retired.
+o diagnostics "VISCAHD" & "VISCA4D" replace "VISCAH" & "VISCA4".
 o In response to JMC's bug report, genmake2 now ignores any soft-links
   that it finds in the *current* directory when searching for files.
   Soft-links found in any other source directories will still work as