Each page is divided into three sections; the lower section is removed by Customs on entry into a country; the middle section is removed on exit; the top, counter-foil section, is stamped once on entry and once on exit. A country re-visited during a return journey will require a new page to be stamped.
It is vital that the holder gets these endorsements, particularly on exit, as they prove that a vehicle has complied with temporary import conditions and discharge responsibility for any possible future import charges providing the Carnet is correctly discharged from each territory where the Carnet is used during your journey.