--- MITgcm_contrib/heimbach/OpenAD/README	2005/12/13 15:15:27	1.1
+++ MITgcm_contrib/heimbach/OpenAD/README	2006/07/13 19:11:27	1.2
@@ -75,4 +75,21 @@
 
 make adall
 
+STEP 3:
+######
+Compare reference outputs.
+
+# uncompress outputs in results_... directories:
+gunzip ../results_shallow_*/output.txt.gz
+
+# extract gradients from TAF-generated adjoint:
+grep grad-res ../results_shallow_taf/output.txt
+
+# extract gradients from OpenAD-generated adjoint:
+grep ' salt/theta ' ../results_shallow_openad/output.txt
+
+The two positions tested via gradient checks (results_shallow_taf) are
+(i,j,k) = (43,2,1) and (44,2,1)
+Find corresponding locations in ' salt/theta ' output 
+(which outputs whole theta, salt gradient)