Suppose we have a webserver that can perform different kinds of operations on different kinds of values. Perhaps it can reverse or capitalize strings, and increment or negate integers: # curl http://localhost:8081/example/reverse elpmaxe # curl http://localhost:8081/example/caps EXAMPLE # curl http://localhost:8081/1234/inc 1235 # curl http://localhost:8081/1234/neg -1234 Moreover, it can echo bac