I don't think the Free Pascal IDE is related to this If you check the website demos and the "dos.h" source on GitHub, this is a library for making GUI apps who

I don't think the Free Pascal IDE is related to this If you check the website demos and the "dos.h" source on GitHub, this is a library for making GUI apps whose UI has the appearance of being made with MS-DOS. Unless I am misunderstanding the connection you're trying to make, which is also possible