1 files changed, 4 insertions, 2 deletions
diff --git a/Lib/pdb.py b/Lib/pdb.py
index d1a74bb..366a85b 100755
--- a/Lib/pdb.py
+++ b/Lib/pdb.py
@@ -1638,9 +1638,11 @@ def help():
     pydoc.pager(__doc__)
 
 _usage = """\
-usage: pdb.py [-c command] ... pyfile [arg] ...
+usage: pdb.py [-c command] ... [-m module | pyfile] [arg] ...
 
-Debug the Python program given by pyfile.
+Debug the Python program given by pyfile. Alternatively,
+an executable module or package to debug can be specified using
+the -m switch.
 
 Initial commands are read from .pdbrc files in your home directory
 and in the current directory, if they exist.  Commands supplied with