There's no reason why delimiters need to be picked for human readability. Cryptographically random delimiters with adequate entropy seem to guard properly. See

There's no reason why delimiters need to be picked for human readability. Cryptographically random delimiters with adequate entropy seem to guard properly. See my other comment here: https://news.ycombinator.com/item?id=35926548 https://news.ycombinator.com/item?id=35926548