Phrase of the Day: ‘to do something by the book’
‘to do something by the book’ /tuː duː ˈsʌmθɪŋ baɪ ðə bʊk/
This means to be careful to use the accepted methods or procedures when you do something, so that you can’t be accused of improper behaviour.
“Be sure to do everything by the book. I don’t want any mistakes.”