Syntax: logsum ( "all" or (file with list of log filenames) )
                       [minexpos= ]   [-94] [-98]  
   
    Summarizes output from makee log files.
   
    minexpos= : Minimum exposure time for inclusion.
      -98 : Use old (1998) format for log files.
      -94 : Use old (1994) format of output.