method new ( %opt_global? ) {
    self.bless( :%opt_global );
}

submethod BUILD( :%opt_global ) {
    %!opt_global := %opt_global;
     validate_options( %!opt_global );
     %!opt_global<prompt>  //= 'AAAAA';
     %!opt_global<justify> //= 1;
}