An operation definition information producing program that causes a computer, which produces operation definition information that defines an operation of a client when using service in a system in which a server providing the service and the client using the service are connected by a network, to function as:
- defining means for causing a user to define a state of the client when using said service and an operation in the state;
- and
- producing means for producing the operation definition information that defines the operation of the client when using the service from the state of the client when using the service and the operation in the state that are defined by said user.