diff --git a/Inst_eddies/config.f90 b/Inst_eddies/config.f90
index 216360ac8c4ec671644a4446253c0836225d9cab..1bf4432a0604ddfb183ad41e2c2e0679b0da6274 100644
--- a/Inst_eddies/config.f90
+++ b/Inst_eddies/config.f90
@@ -30,13 +30,14 @@ contains
     !----------------------------------------------------------------------
 
     call new_unit(unit)
-    
+
     if (exist) then
        open(unit, file = "SHPC_cyclo/used_nml.txt", status = "old", &
             action = "read", position = "rewind")
        read(unit, nml = config_nml)
        close(unit)
     else
+       print *, "config: Reading config_nml.txt..."
        open(unit, file = "config_nml.txt", status = "old", action = "read", &
             position = "rewind")
        read(unit, nml = config_nml)
diff --git a/Inst_eddies/input_ssh.f90 b/Inst_eddies/input_ssh.f90
index 7c2234bc6ed8bc5f391ca00cff13da2c264403fc..9a5177e2c5aafeba65210a2bb256559829cd019d 100644
--- a/Inst_eddies/input_ssh.f90
+++ b/Inst_eddies/input_ssh.f90
@@ -76,9 +76,9 @@ contains
     ! As we are requiring the grid spacing to be uniform, the value of
     ! "periodic" may be deduced from the values of step(1) and nlon:
     periodic = nint(twopi / step(1)) == nlon
-    print *, "inst_eddies: periodic = ", periodic
+    print *, "input_ssh: periodic = ", periodic
 
-    call assert(2 * max_radius_deg(1) < 180., "inst_eddies max_radius_deg")
+    call assert(2 * max_radius_deg(1) < 180., "input_ssh: max_radius_deg")
     ! (Let us require this even if not periodic. This is clearer.)
 
     max_radius = nint(max_radius_deg / step_deg)
diff --git a/Inst_eddies/inst_eddies.py.in b/Inst_eddies/inst_eddies.py.in
index 8cc6cc9061e204e571c4147d509f5ea82f06e368..0383e1c2c64c0b8c02c4fb3797668d4589ed5d6f 100644
--- a/Inst_eddies/inst_eddies.py.in
+++ b/Inst_eddies/inst_eddies.py.in
@@ -28,9 +28,9 @@ def loop_inst_eddies(files, bbox, d):
         sys.exit(inst_eddies_exe + " not found or not executable")
 
     if os.access("config_nml.txt", os.R_OK):
-        print("Will use config_nml.txt.")
+        print("inst_eddies.loop_inst_eddies: Will use config_nml.txt.")
     else:
-        sys.exit('inst_eddies.py: "config_nml.txt" not found')
+        sys.exit('"config_nml.txt" not found')
 
     nco_instance = nco.Nco()
 
@@ -45,8 +45,9 @@ def loop_inst_eddies(files, bbox, d):
     writer.writerow(["date", "elapsed_NCO", "elapsed_Fortran"])
 
     for nc_file in files:
-        print("inst_eddies.py: Date:", d)
-        print("Input file:", nc_file)
+        print("inst_eddies.loop_inst_eddies: Date:", d)
+        print("inst_eddies.loop_inst_eddies: Input file:", nc_file,
+              flush = True)
 
         if os.access(nc_file, os.F_OK):
             my_pc = time.perf_counter()
@@ -73,7 +74,7 @@ def loop_inst_eddies(files, bbox, d):
             os.remove("uv.nc")
             writer.writerow([d, elapsed_NCO, elapsed_Fortran])
         else:
-            print("inst_eddies.py: Missing file:", nc_file)
+            print("inst_eddies.loop_inst_eddies: Missing file:", nc_file)
 
             for orient in ["cyclo", "anti"]:
                 with open(f"SHPC_{orient}/ishape_last.txt", "a") \
@@ -98,6 +99,6 @@ if __name__ == "__main__":
     argparser.add_argument("-b", "--bbox", nargs=4, type = float,
                            metavar = ("xmin", "xmax", "ymin", "ymax"))
     args = argparser.parse_args()
-    d = input("Enter first date index (integer value):")
+    d = input("Enter first date index (integer value): ")
     d = int(d)
     loop_inst_eddies(args.file, args.bbox, d)
diff --git a/Overlap/Tests/save_snapshot.f90 b/Overlap/Tests/save_snapshot.f90
index 6144cb2dbe60552bdcdb29278a81184ebcc829c2..e3d206b621b4447d7248eba69a43514645e0bf12 100644
--- a/Overlap/Tests/save_snapshot.f90
+++ b/Overlap/Tests/save_snapshot.f90
@@ -16,7 +16,7 @@ contains
     use write_extr_map_m, only: write_extr_map
 
     type(snapshot), intent(in):: s
-    
+
     real, intent(in):: corner(:) ! (2)
     ! longitude and latitude of the corner of the whole grid in input
     ! NetCDF, in degrees
diff --git a/Overlap/Tests/test_overlap.f90 b/Overlap/Tests/test_overlap.f90
index 09eae3c16f7dd658e3912675ca8579714817d712..7fef4fbd5be22ec8c2a1da533fa145c4744c9e74 100644
--- a/Overlap/Tests/test_overlap.f90
+++ b/Overlap/Tests/test_overlap.f90
@@ -3,8 +3,8 @@ program test_overlap
   use, intrinsic:: ISO_FORTRAN_ENV
 
   ! Libraries:
-  use jumble, only: get_command_arg_dyn, read_opcol, new_unit, ediff1d
-  use jumble, only: deg_to_rad, assert
+  use jumble, only: get_command_arg_dyn, read_opcol, new_unit, ediff1d, &
+       deg_to_rad, assert
   use shapelib_03, only: dbf_read_attribute_03
 
   use derived_types, only: snapshot, shpc_slice_handler, shpc_slice_meta