NAME
       WriteUMSConfig -- Write an element to the global configuration.

   SYNOPSIS
       success = WriteUMSConfig( login, tags )
         D0                       D2     D3

       BOOL WriteUMSConfig( LONG, struct TagIten * );

       success = WriteUMSConfigTags( login, tag1, ... )

       BOOL WriteUMSConfigTags( LONG, ULONG, ... );

   FUNCTION
         Write or change something in the global UMS configuration.

   INPUTS
         Allowed tags:

         CfgData               : STRPTR
               this tag holds the data to be written to a string.

         CfgUser               : STRPTR
               name of the user whose config should be changed.

         CfgGlobalOnly         : (none)
               change only global config elements.


         The  following  tags are mutually exclusive.  Use exactly one of
       them.

         CfgName               : STRPTR
               Name of the string that should be changed.  If it does not
       already   exist,   the   string   will  be  created.   If  no  tag
       CfgData is specified, then the string will be deleted.

         CfgDump               : STRPTR
               write the current settings to a file with given name.

   RESULT
       success - whether it was possible and allowed to make the desired
                 write or change.

   BUGS
         This  function  should  provide  tags to create or delete users,
       netgroups,  akas,  etc.   These are not implemented yet.  Tell the
       author (Martin Horneffer) when you need them!

   SEE ALSO
        ReadUMSConfig()