Where has the practice of sending screen shots as source code come from?

[Dan Sommers]

On Mon, 29 Jan 2018 00:27:07 +0000, Steven D'Aprano wrote:

> On Mon, 29 Jan 2018 08:55:54 +1100, Tim Delaney wrote:
> 
>> I got back a Word document containing about 10 screenshots where they'd
>> apparently taken a screenshot, moved the horizontal scrollbar one
>> screen, taken another screenshot, etc.
> 
> You're lucky they didn't just take a single screen shot, thinking that 
> you can scroll past the edges to see what is off-screen.

No!  Not another pass by reference vs. pass by value thread!