How Does the ERC-1155 Standard Specifically Enable the SFT Structure for Financial Instruments?

ERC-1155 allows a single contract to manage multiple token IDs, each representing a distinct class or tranche of a financial instrument. For instance, Token ID 1 could be 'Bond Tranche A' and Token ID 2 could be 'Bond Tranche B.' Within each ID, the tokens are fungible, but the IDs themselves are distinct, perfectly enabling the semi-fungible nature required for tranches with varying terms.