All Fido messages carry hidden kludges. Normally, XP  
 does not display these hidden kludges but by pressing 
 "O" whilst reading a message, the hidden kludges will 
 be shown. If you never wish to see these hidden       
 kludges, you may "check" the box here -> [X].         
 However, you may sometimes wish to see the hidden     
 kludges and if so, leave the box "uncheked" -> [ ].