Anyway, Bixabella, There are agreements between EU members and other (I think geographically european) countries that aren't or weren't part of the EU (European Union). Ever cautious Switzerland had agreements with EU, but wasn't part of the Schengen agreements until recently... and this coming weekend could end in tears, if Swiss people vote No to yet another agreement with the EU, pertaining to the free circulation of people.
Dans les grandes choses, les hommes se montrent comme il leur convient de se montrer; dans les petites, ils se montrent comme ils sont.
It's because we 'helpers' get confused sometimes - there is the 'quote' button, but also the 'modify' button that can be used (yes, a scary thought, I know) and I also have been known to click on the wrong one when I am trying to reply to someone.
Don't worry about us secretly modifying any post, however -- as you can see, any modification leaves a message at the bottom about who was there last.
Bixa, the even more striking aspect of being in the Schengen zone is that the border posts are removed and you go between the various countries as though it were just one big country -- same thing for flights between the countries, which are counted as domestic flights.
The Schengen zone is in blue. The green countries are on the waiting list. And those pink island countries are renegade members of the EU that don't want to join.
There are advantages and drawbacks to the system -- for example, long term tourists hate it, because you can only stay in the zone without a visa for 90 days out of any 180 day period. In the old days, people could stay 90 days in each country.
However, for people who need visas anyway, the visa is valid for the entire zone and not just one country, which really simplifies things for a lot of people, too.
In principle, there will be no border check. That does not mean that the legal limit has been abandoned, however. Mobile customs units patrol all the roads of Europe, but they are mostly looking for major smuggling about which they have been tipped off.