You can use the right hand mouse button on an item of the input data sheet to know more about it or you can read this summary of the 3 "regions" in the input data sheet:

• DBX File: There is a dbx field where you can enter the complete path and file name of the dbx-file representing the Outlook folder you want to search through. You are strongly recommended to complete this field by using the file menu.
  
• Exclude Filter: If you do not want that some items are written to the output file you can use the exclude filter.
  You can exclude specific items from the output file. Your own email-address is a typical example. Also addresses from servers which bounce back sent emails can be entered here (for example "postmaster@" and "mailer-daemon"...) .
  You can prevent that the same address is twice written to the output file by checking the "Doubles" checkbox.
  The "Longer than... characters" can eventually be used too as the Outlook folders usually contain some hidden items which look like addresses but are not. They usually are very long and can be excluded by looking at their length. Checking this checkbox and giving a limitation number can help here.
  About the buttons: Hit the "Default" button to load the initial filter settings proposed by the software maker. Hit the "Standard" button to load all your most preferred filter settings at once. Hit the "Save as standard" button to save all your most preferred filter settings at once. They will be saved in the "standard.flt" file. Hit the "Save" button to save the actual filter settings. Do not forget to enter first a name for your filter (eg "project_1_filter").
• Output File: the program will propose a name for your output file or you can enter here the complete path and file name of the output file where the found emails will be written to. If it exists already you can simply use the file menu to select it and so enter it automatically... .
  Be sure to use a .csv extension when csv is set in option output kind. The statusbar will warn you when you type the wrong extension.