The DNE makes it easy to make and maintain information context on the fly. This is done by use of a variety of fields in which you can introduce and modify brief notes about the relevant NE or tile in a variety of formats, not only in print but also as audio prompts. NEs can be ranked, important dates can be recorded, and notebooks can be kept in fields. These notes are introduced and maintained in each NE's field area. Fields are object model specific, so for NEs that exist in more than one model you can keep different sets of information fields on the same NE.