Roll20

[Oedipussy Rex]

So I checked out the site and found it unhelpful for the questions I have. It says it's system agnostic, but it doesn't say what it actually does, like what kind of dice you can use. Can I roll a d87? I have no doubt that it does, but how about dice pools? Or exploding dice? Of the proper type? How about scaling dice? Questions I'm not willing to register to find out.