--- a/textshaper/main.py	Thu Mar 13 13:53:41 2014 -0700
+++ b/textshaper/main.py	Sat May 03 14:47:16 2014 -0700
@@ -12,6 +12,7 @@
 import time
 from .commands import Commands
 from .indent import deindent, indent
+from .whitespace import underscore
 from which import which
 
 HR = '--'
@@ -39,8 +40,10 @@
     commands = Commands()
     commands.add(indent, 'i')
     commands.add(deindent, 'd')
+    commands.add(underscore, 'u')
     return commands
 
+
 def add_options(parser):
     """add options to the parser instance"""