The way we produce business documentation today bears almost no resemblance to the methods used when I entered international trade.
Today, an invoice can be prepared on a computer, corrected without leaving a trace, converted into a PDF and transmitted to several people around the world within seconds. Identical copies can be printed whenever required, and the electronic original can be stored, searched for and retrieved years later.
In the 1960s, producing export documentation was a considerably more physical—and sometimes exhausting—exercise.