# Reference ### Description A Reference contains a Row ID of a specific List. This is used to create one to many, or many to many relations between lists in a datamodel. Or it is used to (temprorarily) keep a handle to one specific Row in a List (Current-User, Current-Product) with which you can access all properties of that List Item using the De-Reference operator (`->`): `[CurrentUser]->[UserName]` It can also be used with a Reference Container Block in the Template Editor to access all properties of the specific List Item to display and use on the template, to easily display multiple fields without repeating the De-Reference operator in multiple labels. ### Unknown An unknown value is written as `UnknownEntityReference`. --- # 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://docs.wem.io/platform/wemreference/data-types/reference.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.