diff --git a/Inst_eddies/inst_eddies_in.py b/Inst_eddies/inst_eddies_in.py
index fadb864fccb59eb78f78f769596910eedab33091..7911a0dcb74ab43c901087d29bb37cb024beea14 100755
--- a/Inst_eddies/inst_eddies_in.py
+++ b/Inst_eddies/inst_eddies_in.py
@@ -1,5 +1,9 @@
 #!/usr/bin/env python3
 
+"""This script replaces the directories SHPC_cyclo and SHPC_anti and
+the file perf_report.csv.
+
+"""
 
 import argparse
 import datetime
@@ -46,6 +50,7 @@ writer.writerow(["date", "elapsed NCO", "elapsed Fortran"])
         
 for nc_file in args.file:
     print("inst_eddies.py: Date:", d)
+    print("Input file:", nc_file)
 
     if os.access(nc_file, os.F_OK):
         my_pc = time.perf_counter()