How is “to the letter” used?

In Silver Linings Playbook (2012), one line is: “- Better get back to the letter. - Let's get back to the letter.”

Which movie is “to the letter” from?

The clip at the top of this page is from Silver Linings Playbook (2012).

- Better get back to the letter. - Let's get back to the letter.

8 作品で登場 · 1 本目

doing / following exactly what sb / sth says, paying attention to every detail

10 本の映画に登場

オックスフォード映画の 67%
doing / following exactly what sb / sth says, paying attention to every detail
l'm just following orders to the letter. lsn't that what you said?

定義：Oxford Advanced Learner's Dictionary 第 9 版