Please add punctuation to this: Did someone email you a A1 file and youre not sure how to open it Maybe you have found a A1 file on your computer and wondering what its for Windows might tell you that you cant open it or in the worst case you might encounter a A1 file related error message

Punctuation version:
Did someone email you a A1 file and you're not sure how to open it? Maybe you have found a A1 file on your computer and wondering what it's for? Windows might tell you that you can't open it, or in the worst case, you might encounter a A1 file related error message.