So I should stop using dd as a text editor, is that what you're trying to tell me?
yes 'y' | dd of=response bs=1 count=1
yes 'e' | dd of=response bs=1 count=1 seek=1
yes 's' | dd of=response bs=1 count=1 seek=2Bravo, you've found something (marginally) more upsetting than using ed:)