Bip39 Ian Coleman. Firstly you should retailer it SEPARATELY from a seed. Having your seed along with your passphrase in the same location defeats the goal of having a passphrase to begin with. None of those examples are concerned with arguments that you should use for differing types of typos, https://bookmarksystem.com/story18618240/bip39-https-linktr-ee-bip39-bip39-wallet-fundamentals-explained