> For the complete documentation index, see [llms.txt](https://enercalc.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://enercalc.com/docs/sel-installation-activation/licensing-and-legal/sel-earth-mode-limitations.md). # SEL Earth Mode Limitations Describes the features available in SEL Earth Mode and the full ENERCALC SEL subscription. ENERCALC SEL is available by subscription. SEL Earth Mode gives current subscribers access to the Retaining Wall modules. ### SEL Earth Mode features SEL Earth Mode includes: * Rewritten internal code from the legacy RetainPro program * A redesigned user interface and improved reporting * Faster interface management and calculations * Multi-core processor support * An improved activation system with internet security awareness * Improved 3D image rendering * An RPN Calculator that can remain open while you work in SEL * Debug utilities that you can enable or disable ### Features in the full subscription The full ENERCALC SEL subscription includes these features, which aren't available in SEL Earth Mode: * Local and cloud use with project file synchronization * QuickCalc on the **Projects** tab * [ENERCALC 3D FEM](https://enercalc.com/docs/e3d-user-manual/) * [Steel Base Plate by FEM](https://enercalc.com/docs/sel-user-manual/calculation-modules/miscellaneous/steel-base-plate-fem) * [General Footing by FEM](https://enercalc.com/docs/sel-user-manual/calculation-modules/foundation/generalfooting) * [Flitch Plated Wood Beam](https://enercalc.com/docs/sel-user-manual/calculation-modules/beams/flitch-plated-wood-beam) * [ENERCALC for Revit integration](https://enercalc.com/enercalc-for-revit/) – Live 2 way analysis & design of building components (requires a separate subscription) * Future enhancements and maintenance --- # 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 by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://enercalc.com/docs/sel-installation-activation/licensing-and-legal/sel-earth-mode-limitations.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.