to the letter

do písmene, úplně, zcela

When such instructions were laid down, they were to be carried out to the letter. (Google)

I’m sure you are pressed for time, but if you can spare seven minutes please watch Chapter 3, which lays out how copyright law, if it were followed to the letter, would categorically outlaw a large category of artistic endeavours, namely those that involve a collage or remix of existing culture. (Google)

What I'm saying happens always and is repeated to the letter every time. All similar stories have this same ending. (Google)
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