--- MITgcm_contrib/jmc_script/README	2022/03/17 19:59:54	1.20
+++ MITgcm_contrib/jmc_script/README	2023/07/19 14:04:48	1.21
@@ -64,6 +64,10 @@
   to compare MONITOR output from 2 STDOUT files (outside of testreport).
   Note: use executable "cmpnum" compiled from tiny fortran code: cmpnum.f
 
+i) script: mod
+  to perform automatic substitution (useful to maintain src code) using
+  command "sed" and set of rules from file (default rule file: "mod.sed")
+
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 shell & matlab scripts to process MONITOR output from STDOUT files
  and make simple time-serie plots: