I was confused by this, too. Also there are absolutely no imports. This leaves me really confused, wondering why why why anyone would ever do such a thing.

I have two benevolent, understanding and sympathetic explanations: The author is from yesteryear and hasn't worked with other people in a while.

The other one is: He is a genious hacker and knows how to social engineer most of hn. Since Most links point to the same rtf document it might just be a way to spread a very delicate RTF reader exploit..

Back in the 90ies there was a version of NeXT's gcc that allowed RTF input. Quite neat, and I pretty sure I "downloaded" some sample code for it (probably via FTP...)