METHOD FOR CLIENT-SERVER COMMUNICATIONS THROUGH A MINIMAL INTERFACE

The concept of a subroutine call is one of the basic ideas in computer science. The invention relates to a technique for achieving the effect of subroutine calls in certain situations where they would not otherwise be possible. The invention allows for the simulation of subroutine calls in applications where the interaction with a client is reduced to successive iterations in which the application sends the client a set of keys, and the client chooses one of the keys and sends it back to the application (i.e., a minimal interface). In one implementation, the invention is used to simulate subroutine calls in an application running on a Web server and communicating with the client through successive Web pages.