Any comment and suggestions for improvements are appreciated. Comments, suggestions for improvements and requests for further information can be sent by e-mail to the GRAIL Project Coordinator at INECO. For more information concerning the GRAIL project, please contact: Project Coordinator Alvaro Urech INECO - Aeronautical Systems Avenida del Partenón 4 28042 - Madrid, Spain GJU Project Officer Vincent Gabaglio 3, Rue du Luxembourg B-1000 Brussels Belgium