I know the display address usually (always?) is :0.0 and I would like to understand what the elements of this address mean. Would someone be kind enough as to point me to where I can read about this subject? Thanks. -- Erik P. Olsen, Civilingeniør, MSc Solsortvej 30, DK-2000 Frederiksberg, Denmark Phone: +45 38346480, Fax: +45 38346470, Mobil: +45 40765300