> For the complete documentation index, see [llms.txt](https://docs.buildings.ability.abb/collection/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.buildings.ability.abb/collection/english-v14/foreword/glossary.md). # Glossary ## GAI Abbreviation for **G**lobal **A**sset **I**dentifier. The GAI is a unique identifier that must be assigned to every asset. The GAI can be used to uniquely identify each individual asset. ## Assets Assets are a special type of entity in ABB BuildingPro. Most assets you will encounter will probably be sensors. But rooms, floors, buildings, and even entire countries and continents can also be assets. ## Entities Everything you can interact with in ABB BuildingPro is an entity: assets, users, projects, tags, etc. Entities are an abstract representation of a real or conceptual object that stores information or data and is used in the context of the application. Entities can have various attributes and properties. Entities serve to organize and process information. ## Building users Building users are people who do not work directly with ABB BuildingPro, but use the building passively—for example, employees in an office building. --- # 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://docs.buildings.ability.abb/collection/english-v14/foreword/glossary.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.