[SideburnsOfDoom]

Things such as "implement the 'writeln' function" fall under the umbrella of "operating system interop" or "Foreign function interface", don't they?

Any general-purpose programming language, pascal or not, will eventually have that. But it might not be in a general language standard.

[ken]

I think the point is that it’s not so rare that one might run into this type of situation. The article even mentions one.

> It is unfortunate that there is no way to make this convenience available to routines in general.