Hi all--Just joined this group because of my first BMW; a 1986 325. The computer in the dash is not the one shown in the owner's manual. It has buttons for time, date, temperature, something called "h/dat" (I think to set the hour and month), something called "mini/dat" (I think to set the minute and day of month), and lastly, something called "memo". Could someone enlighten me as to the functions of the last three buttons listed? TIA, Jeff '86 325 176K