# EIP-2547: Composable Multiclass Token #### Opium.Team has decided to create Ethereum Improvement Proposal for Opium token standard to receive an official name. Opium token standard is also known as ERC-721o. If you can give us some feedback and review, we will be really grateful! The proposal you can find here #### [Read more about Opium token standard](https://docs.opium.network/introduction-to-opium/opium-token-standard-erc-721o) --- # 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.opium.network/for-developers/protocol/eip-2547-composable-multiclass-token.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.