> For the complete documentation index, see [llms.txt](https://pliangroup.gitbook.io/plian/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pliangroup.gitbook.io/plian/for-developers/solidity/lll.md). # LLL LLL is a low-level language for the EVM with an s-expressions syntax. The Solidity repository contains an LLL compiler, which shares the assembler subsystem with Solidity. However, apart from maintaining that it still compiles, no other improvements are made to it. It is not built unless specifically requested: ``` $ cmake -DLLL=ON .. $ cmake --build . ``` {% hint style="danger" %} The LLL codebase is deprecated and will be removed from the Solidity repository in the future. {% endhint %} --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://pliangroup.gitbook.io/plian/for-developers/solidity/lll.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.