Bip39 Checksum. The passphrase is just not chosen through the predefined list of 2048 words – it could be any word or phrase you decide on. None of those examples are concerned with arguments that you should use for differing types of typos, tokenlists, etc. BIP-32 hierarchical deterministic wallet. BIP-39 https://thebookpage.com/story4228954/ian-coleman-bip39-https-linktr-ee-bip39-not-known-facts-about-bip39