#p623

To decipher the letter from Johnny's mother on pages 620-623, you could take the time to write down the first letter of each word, and then go through what you've written, finding words and making sense of them.  But by deciphering the letter in your head as you read, you'd be doing exactly what you're doing as you read the rest of the book: reading every word, following each story line, while at the same time trying to make sense of the book as a whole.