# ERC721SingleEditionDFS The ERC721SingleEditionDFS implementation is similar to the ERC721EditionsDFS described above, with the exception that it can only support a single edition. This is typically used for open edition mints where the final token count is potentially infinite or unknown, and the metadata for each token should be exactly the same. ### Contract link {% embed url="" %} --- # 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://support.highlight.xyz/knowledge-base/for-developers/nft-contracts/erc721singleeditiondfs.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.