In the context of this article, we will define the digital document as a document whose main method of consultation is reading on screen. By extension, certain forms of display on screen may in this case be akin to digital documents even if they do not have a trace or stability objective (software screens, process control boards). The boundary between document and software is now very tenuous. Some websites, for example, offer a part that can be described as a document while another part is more akin to software. Is it a document or software? The digital world therefore raises the question of the emergence of a new type of document, the content of which may be unstable and vary significantly from one consultation to another because of the involvement of IT applications in determining part of the document (databases, programming, animations).