Erases all the fields of the current QSO, but does not delete the QSO !
However, the best way to "delete" a QSO is to do it after the end of the contest, in the final log files. Otherwise, you can also write down your own callsign (and clear it afterwards with File / Clean log), but this may create errors in the multipliers list. The best way is to duplicate the previous QSO. It will be one more dupe QSO, but the points and the mutlipliers will be correct.
Last update : 2004 may 9