Hyper videos introduce the possibilities of navigating and controlling the flow of information in a non- linear information structure to videos as we know th em from hyper texts. In this paper we are going to analyze the design of links in hyper videos by show ing the possibility of representing links in and the design options in a linkage scenario. In a linkage scenario links can be presented by means of effects or as explorative links. Links by means of effects can be represented by frames, by contrast in color, by three-dimensional objects or by illumination effects. E xplorative links have to be discovered by the user in a scene. Explorative links can be represented by words on objects, by signs on objects, by striking objects and by doors. A usability test has been designe d to evaluate the usability of explorative links in hyper videos. We are going to present the results of this usability test in this paper.