A document is a bounded digital representation of a body of information designed with the capacity (and usually intent) to communicate. A document may manifest symbolic, diagrammatic or sensory-representational information. To document is to produce a document artifact by collecting and representing information. In prototypical usage, a document is understood as a paper artifact, containing information in the form of ink marks. Increasingly documents are also understood as digital artifacts.
Introduction the software that allows using tags and categories on your computer just the way you do with web-pages