This class contains a pointer to the image of scanned page plus a property in which to store a relevant date for the page. This is needed in order to handle multi-page documents in which there are different dates on some or all of the pages. This is particularly necessary when scanning in a paper medical record. In practice, the scanned document will have one or more of these scanned pages, each of which has one image associated with it. The date property associated with the image is optional as many document pages either don’t have dates or aren’t dated differently from the document as a whole. Note that there is nothing prohibiting the scanned image from containing multiple pages, so the document class may have one page class which has one image which contains multiple pages. Yet this class exists so that the separate dates can be associated with separate pages (or groups of pages).