Once the required nodes have been segmented and combined with the associated linking information, this metadata must be incorporated with the original video for playback. The metadata is placed conceptually in layers, or tracks, on top of the video; this layered structure is then presented to the user for viewing and interaction. Thus the display technology, the hypervideo player, should not be neglected when creating hypervideo content. For example, efficiency can be gained by storing the geometry of areas associated with tracked objects only in certain keyframes, and allowing the player to interpolate between these keyframes, as developed for "HotVideo". Furthermore, the creators of "VideoClix" emphasize the fact that its content plays back on standard players, such as Quicktime and Flash. When one considers that the Flash player alone is installed on over 98% of internet-enabled desktops in mature markets, this is perhaps a reason for the success of this product in the current arena.