The "scan" program does not modify "$@".

mk/wrapper/NOTES

@@ -1,8 +1,8 @@
-$NetBSD: NOTES,v 1.3 2006/02/02 23:08:31 rillig Exp $
+$NetBSD: NOTES,v 1.4 2006/10/21 11:43:42 rillig Exp $
 
 The wrapper scripts work roughly like the block diagram below.
 
-===> {"$@"} <---> [scan]
+===> {"$@"} ---> [scan]
       |
       v
      [arg-source]
@@ -32,8 +32,3 @@ The wrapper scripts work roughly like the block diagram below.
        \   /
         v v
 <===   {cmd}
-
-Additional notes:
-
-* The <---> between the "$@" and the [scan] is indentional. The [scan]
-  program may indeed modify "$@" by using the "set --" shell command.