“Hello world” is the name, if I remember correctly, of a dummy post that appears when you first set up a blog with WordPress.
In this case, “hello world” is simply a greeting that I’m using to update this site. Obviously, it’s been a while since I wrote anything original here. That’s because my interests have taken toward writing stuff that isn’t related to public policy. And when I have been involved in policy lately, it’s been more with the proofreader’s or editor’s pen than the writer’s. In one case, yes, it was actual with a pen, though usually I use a computer keyboard.
That’s all for now. By the way, if you’re interested in “who” versus “whom” and other such questions, as well as some advice on how to improve your writing skills, may I offer a recommendation? Garner’s Modern American Usage.