Working with check-in, checkout, revert, and tracking history

All right, we've got a working HG repository. It's time to add some files and check it in.…Mercurial is different than some of the other systems because we have to do one piece of…initialization globally before we can start checking things in.…What we have to do is to create a file in the user profile called Mercurial.ini, and…inside of it we had to put in our username and email address.…So we'll say Notepad, %userprofile%\Mercurial.ini. It doesn't exist, we do want to create it.…

I copied the text that we need onto the clipboard, so you will type in ui, then username = and…here you will put in your username, and over here you'll put your email address.…Just remember, this is not a real email address. Don't try sending email there.…Okay, now we have got Mercurial fully initialized.…We can start putting in some code. So let's open up Notepad and create our file.…The code we are going to put in has some content from the new project's haiku error messages page.…

We'll pick one that's happen to all of us before we start using Version Control "With…