If You wish to exit SwiftView with "F3" it can be done by inserting the following in the c:\windows\sview.ini file:

 ICS0=gui key "F3" quit    

If you wish to change the text desciption in SwiftView. In this example it is translated into Danish by inserting the following in  the i c:\windows\sview.ini file:

        ;***   Define buttons (continuing with ICS numbering from above)
  ;***   These are the default settings.  First clear any GUI definitions.
 ICS1=gui controls clear
 ICS2=gui button label "Exit" icon exit info "Exit" command "quit"
 ICS3=gui button label "Alt" icon all info "Vis hele siden" command "draw all"
 ICS4=gui button label "Bred" icon wide info "Fuld skærmbredde" command "draw widetop"
 ICS5=gui button label "Rotér" icon rotate info "Rotér med uret" command "rotate next|draw"
  ICS6=gui button label "Print" icon print info "Print dokument" command "gui dialog print"
 ICS7=gui button label "Åbn" icon open info "Åbn document" command "gui dialog open"
 ICS8=gui button label "Hjælp" icon help info "Tips" command "gui dialog help"   

If you wish to add a function key that converts the file into TIFF, the folowing has to be added into the c:\windows\sview.ini file. The example is in Danish: 

 ICS9=gui button label "Konverter" icon save info " Konverter til TIFF" command "gui dialog save"