# Structure The Regen Registry can be divided into three main sections: * The [Regen Registry Handbook](https://handbook.regen.network/) outlines the processes by which different stakeholders can engage in the **creation of new methodologies and programs** used to develop projects and issue credits using features provided by the Regen Marketplace App. * The [Regen Ledger](https://docs.regen.network/) is the **underlying blockchain infrastructure** that stores all information related to claims made on ecological state to provide an open and audible trail for assets issued on our platform. * The [Regen Marketplace App](https://app.regen.network/) is a **front-end application** which allows stakeholders to use Regen Ledger to register projects, buy and sell credits on an open marketplace, and engage in network governance. --- # 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://handbook.regen.network/regen-registry-overview/structure.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.