--- MITgcm_contrib/dfer/matlab_stuff/calcHeatTransDirect.m	2018/03/07 22:01:18	1.2
+++ MITgcm_contrib/dfer/matlab_stuff/calcHeatTransDirect.m	2018/04/19 00:03:59	1.3
@@ -39,7 +39,11 @@
 %       nFld = 5 = Residual [5=2-4]
 %       Ocn only:
 %         If GM advective form:
-%       nFld = 6 = HT by horizontal diffusion
+%       nFld = 6 = total (GM+Redi) eddy transport: K*dT/dy
+%                  WARNING: This assumes K_gm=K_iso to get
+%                  the cancellation of the off-diagonal term
+%                  (K_iso-K_gm)*S_y*dT/dz
+%       nFld = 7 = GM (advective) eddy transport
 %         If Skew flux form:
 %       nFld = 6 = total (GM+Redi) eddy transport
 %       nFld = 7 = GM (advective) eddy transport