# Application Note: Gateway Builder Tutorial This application note will guide you through the use of the Gateway Builder included with Vehicle Spy 3 Enterprise. The application note covers how to add incoming and outgoing messages, how to gateway entire networks and exclude certain messages, and how to map messages and signals from incoming to outgoing networks. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.intrepidcs.com/vspy-3-documentation/application-notes/application-note-gateway-builder-tutorial.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.