Authors:

In every operation there is an above the line and a below the line. Above the line is what you do by the book. Below the line is how you do the job.

John le Carre (2002). “A Perfect Spy”, p.316, Simon and Schuster
In every operation there is an above the line and a below the line. Above the line is what you do by the book. Below the line is how you do the job.