minor cleanups
diff --git a/src/emuvim/cli/network.py b/src/emuvim/cli/network.py
index 53007cd..516a752 100755
--- a/src/emuvim/cli/network.py
+++ b/src/emuvim/cli/network.py
@@ -84,7 +84,8 @@
 parser = argparse.ArgumentParser(description='son-emu network')

 parser.add_argument(

     "command",

-    help="Action to be executed: add|remove")

+    choices=['add', 'remove'],

+    help="Action to be executed.")

 parser.add_argument(

     "--datacenter", "-d", dest="datacenter",

     help="Data center to in which the network action should be initiated")

@@ -103,10 +104,10 @@
 parser.add_argument(

     "--bidirectional", "-b", dest="bidirectional",

     action='store_true',

-    help="add/remove the flow entries in 2 directions")

+    help="add/remove the flow entries from src to dst and back")

 parser.add_argument(

     "--cookie", "-c", dest="cookie",

-    help="cookie for this flow")

+    help="cookie for this flow, as easy to use identifier (eg. per tenant/service)")

 

 def main(argv):

     args = vars(parser.parse_args(argv))