Video-to-video linking was demonstrated by the Interactive Cinema Group at the MIT Media Lab. "Elastic Charles" was a hypermedia journal developed between 1988 and 1989, in which annotations, called "micons", were placed inside a video, indicating links to other content. When implementing the Interactive Kon-Tiki Museum, Listol used in order to represent video footnotes. Video footnotes were a deliberate extension of the literary footnote applied to annotating video, thereby providing continuity between traditional text and early hypervideo. In 1993, Hirata et al. considered media based navigation for hypermedia systems, where the same type of media is used as a query as for the media to be retrieved. For example, a part of an image (defined by shape, or color, for example) could link to a related image. In this approach, the content of the video becomes the basis of forming the links to other related content.