“Knowledge can be understood as interpreted content, available to a member of a community and always shaped by a particular context. Digital representations of content and context become e-knowledge through the dynamics of human engagement with them. The digital elements of e-knowledge can be codified, combined, repurposed, and exchanged. Knowledge is both a thing and a flow, shifting between explicit and implicit states and between different meanings in different contexts.” (Donald M. Norris, Jon Mason and Paul Lefrere)