hello I was using leaflet to get map from openstreet map and came across this. http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png could anyone explain it to me? I got the map but not in the right position and the right portion that i wanted thank you

hello I was using leaflet to get map from openstreet map and came across this. http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png could anyone explain it to me? I got the map but not in the right position and the right portion that i wanted thank you