> For the complete documentation index, see [llms.txt](https://docs.adnuntius.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adnuntius.com/adnuntius-data/user-interface-guide/fields.md).

# Fields

Concept Summary

| Concept                                                             | Description                                                                                                                                                              |
| ------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| [Fields](/adnuntius-data/user-interface-guide/fields/fields.md)     | Adnuntius Data holds a Visitor Profile record for each of your users. Each profile provides many fields to store data against.                                           |
| [Mappings](/adnuntius-data/user-interface-guide/fields/mappings.md) | Mappings allow you to use one or more names to refer to any of our pre-defined fields, and to normalise field values, so that for instance “Male” is transformed to “M”. |