diff --git a/bin/sasArg.ml b/bin/sasArg.ml
index eb4723710c6273d5fa7382e546abb4acf23abee6..cd4e60491e487abf465f566647389009463efab8 100644
--- a/bin/sasArg.ml
+++ b/bin/sasArg.ml
@@ -1,4 +1,4 @@
-(* Time-stamp: <modified the 14/03/2019 (at 13:36) by Erwan Jahier> *)
+(* Time-stamp: <modified the 14/03/2019 (at 16:15) by Erwan Jahier> *)
 
 
 type t = {
@@ -18,8 +18,8 @@ type t = {
   mutable _margin : int;
 }
 
-let usage_msg = ("usage: " ^Sys.argv.(0) ^ " [<option>] [<topology>.dot file]
-use --help to see the available options.
+let usage_msg = ("usage: " ^Sys.argv.(0) ^ " [<option>]* <topology>.dot 
+use -h to see the available options.
 " )
 let print_usage () = Printf.printf "%s\n" usage_msg; flush stdout
 
@@ -91,29 +91,29 @@ let (mkoptab : t -> unit) =
 
     mkopt opt  ["--central-demon";"-cd"]
       (Arg.Unit(fun () -> args.demon <- Demon.Central))
-      ["Use a Central deamon (selects exactly one action)"];
+      ["Use a Central deamon (which selects exactly one action)"];
     
     mkopt opt  ["--locally-central-demon";"-lcd"]
       (Arg.Unit(fun () -> args.demon <- Demon.LocallyCentral))
-      ["Use a Locally Central deamon (never activates two neighbor";
+      ["Use a Locally Central deamon (which never activates two neighbors";
        "actions in the same step)"];
     mkopt opt  ["--distributed-demon";"-dd"]
       (Arg.Unit(fun () -> args.demon <- Demon.Distributed))
-      ["Use a Distributed deamon (select at least one action)"];
+      ["Use a Distributed deamon (which select at least one action)"];
     
     mkopt opt  ["--custom-demon";"-custd"]
-      (Arg.Unit(fun () -> args.demon <- Demon.Custom))
-      ["Use a Custom deamon"];
+      (Arg.Unit(fun () -> args.demon <- Demon.Custom;args.rif <- true))
+      ["Use a Custom deamon (forces --rif)"];
 
    mkopt opt  ["--rif";"-rif"]
       (Arg.Unit(fun () -> args.rif <- true))
       ["Follows RIF conventions"];
 
-   mkopt opt  ["--gen-lutin-demon";"-gld"]
+   mkopt opt ~hide:true ["--gen-lutin-demon";"-gld"]
       (Arg.Unit(fun () -> args.gen_lutin <- true))
       ["Generate Lutin demons and exit"];
 
-    mkopt opt  ["--ignore-first-inputs"; "-ifi"]
+    mkopt opt ~hide:true ["--ignore-first-inputs"; "-ifi"]
       (Arg.Unit(fun () -> args.ifi <- true))
       ["Ignore first inputs (necessary to use luciole via lurette/rdbg/luciole-rif)"];