# March 30, 2022 ## Updated Features * Changes to [user and document objects](/api-references/user/registration-1.md) to distinguish between virtual and physical documents. Virtual\_document refers to document information and physical\_documents refer to the copy of the document. This change has affected all APIs related to the user and document object. --- # 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://paas.docs.machnetinc.com/changelog/2022/march-30-2022.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.