# Contributing to ESDL To contribute to the ESDL language you have to install Eclipse and the Eclipse Modelling Tools which contain the Eclipse Modelling Framework. These can be downloaded from the eclipse.org website. Easiest is downloading the modelling package directly with a new Eclipse installation, but alternatively you could also install these modelling tools as plugins in your existing Eclipse installation. Since EMF is still under active development, and ESDL is using new features from these latest releases, it is required to use the latest version of Eclipse. Currently Photon is the latest stable release of Eclipse. You can download the Eclipse installer from the [general download page](https://www.eclipse.org/downloads/) and select the Eclipse Modelling Tools from the list of options after running the executable. --- # 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://energytransition.gitbook.io/esdl/setting-up-eclipse-modelling-tools.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.