It's a language I don't hear much these days.

What purpose is it used?

I still think that Classic Visual Basic 6 is the best tool to make a small app with a user friendly GUI that has a few buttons and you can distribute to end users and they can just click, be happy and think you are some kind of genius. Anyway, it's kind of dead :( , so I don't recomend to start with it now.

I'm still amazed how much I could do with a dozen of lines of PHP and Javascript, and make a simple web app, that I can deploy anywhere and my colegues be happy because I solver our problem.

(I never used Pascal (well, perhaps a hundred of LOC in total), but the old Borland Pascal compiler was extremly fast and good when it was released.)