Abstract: Five burners are arranged in the form of an “x.” The units are covered by a grate including two side sections, each covering two burners, and a central section covering the center burner. The side sections have concave inner side edges that mate with a circular segment of the center grate.

Abstract: A distributed transaction processing system includes a process automation application, referred to as a commerce exchange server, that manages transaction processing and message flow among application programs in a distributed computer network such as the Internet. The system includes a specially designed application interaction protocol that implements the request-reply, publish-notify and broadcast application interaction models. The system also uses a novel transaction definition data structure for specifying the component operations and processing logic that comprise the transaction. The transaction definition data structure allows for the use of conditional logic that specifies constraints on the sequence of operation execution.