Bip39 Seed. Press X to abort passphrase application and retain editing the passphrase. Picking out CANCEL after an abort will prevent the procedure. And you need to have published it down in the event you were hoping to maintain an alternative open to revive your accounts. BIP-32 hierarchical deterministic wallet. https://bookmarktiger.com/story19423020/bip39-mnemonic-https-linktr-ee-bip39-the-best-side-of-bip39-mnemonic