Ah , as usual I took your question quite literally as an actual inquiry open for answers from anyone . Okay , Cal - yoohoo !, - you haven't yet answered Skizz - do your 'splainin I will add (again ) that it is important to keep every document and scrap of paper they give you when entering at each border so that you can present them at time of exit and avoid complications . I once sat around the GT customs of Puerto Barrios for an hour when I had misplaced one of my GT pages and they phoned to HQ trying to ascertain my legality . When I did locate that page it instantly solved the problem . Leaving Costa Rica to Panama , on trips before internet , I was asked which border port I would use going back into CR ,in order that they could notify that crossing in preparation and they handed me a small form to hand off there . Now with internet connections that is a needless exercise . Okay ,over to Cal .