diff --git a/example/Makefile b/example/Makefile
index 0612439..4602bb7 100644
--- a/example/Makefile
+++ b/example/Makefile
@@ -1,6 +1,6 @@
 IRPF90 = irpf90  #-a -d
 FC     = gfortran
-FCFLAGS= -ffree-line-length-none -O2 
+FCFLAGS= -O2
 
 SRC=
 OBJ=
diff --git a/example/input.irp.f b/example/input.irp.f
index 2eee5bf..e41611b 100644
--- a/example/input.irp.f
+++ b/example/input.irp.f
@@ -12,8 +12,5 @@ for i in range(1,6):
     print "  ASSERT ( d%d > d%d )"%(i,i-1)
  END_SHELL
 
- print *,  &
-  'ceci est un ' &
-  //'test'
 END_PROVIDER
 
diff --git a/src/command_line.py b/src/command_line.py
index 8186cd0..de9531e 100644
--- a/src/command_line.py
+++ b/src/command_line.py
@@ -36,6 +36,7 @@ options['a'] = [ 'assert'       , 'Activate assertions', 0 ]
 options['h'] = [ 'help'         , 'Print this help', 0 ]
 options['i'] = [ 'init'         , 'Initialize current directory', 0 ]
 options['D'] = [ 'define'       , 'Define variable', 1 ]
+options['o'] = [ 'checkopt'     , 'Show where optimization may be required', 0 ]
 options['p'] = [ 'preprocess'   , 'Preprocess file', 1 ]
 
 class CommandLine(object):
diff --git a/src/parsed_text.py b/src/parsed_text.py
index 78f145e..41d83d3 100644
--- a/src/parsed_text.py
+++ b/src/parsed_text.py
@@ -440,6 +440,26 @@ for filename,text in parsed_text:
   result.append ( (filename,text) )
 parsed_text = result
 
+######################################################################
+from command_line import command_line
+
+def check_opt():
+  if not command_line.do_checkopt:
+    return
+
+  for filename, text in parsed_text:
+    do_level = 0
+    for vars,line in text:
+      if do_level > 0 and vars != []:
+        print "Optimization: %s line %d"%(line.filename,line.i)
+        for v in vars:
+          print "  PROVIDE ",v
+      if isinstance(line,Do):
+        do_level += 1
+      elif isinstance(line,Enddo):
+        do_level -= 1
+check_opt()
+
 ######################################################################
 if __name__ == '__main__':
  for i in range(len(parsed_text)):
diff --git a/src/version.py b/src/version.py
index dadb024..fef004d 100644
--- a/src/version.py
+++ b/src/version.py
@@ -1 +1 @@
-version = "1.1.40"
+version = "1.1.41"