Can you replace word "work" with other word so that I can understand this paragraph? "How does the business side of open access work? Open access journals and books operate under a reversed business model to the traditional subscription-based publishing model. Instead of charging users a fee to read the content, they charge an open access fee at the beginning of the publication process and this enables all the content to be made freely available. The author is responsible for making or arranging the payment."I mean "work" in "How does the business side of open access work?"