[fpc-pascal]System unit and readln

[Maciej Łaszcz]

On Thu, 19 Jun 2003, Marco van de Voort wrote:
> > Where can I find the declaration of read, readln, write and writeln
> > procedures? I've searched the whole source package for fpc and didn't
> > find even header of those function, where they are?
>
> These aren't proper procedures, and the compiler generates "special" code
> for it.
>
> So there is no definition.
>
> If you are merely searching for a way to do variable number of arguments,
> look in the help for "array of const"

I need to know which system function have to be blocked to block writeln,
write function. And as I see I can't block it