We have a "jump to scene" and a "go to time in timeline".
Two more useful links would be:
1. Ability to place named markers on a timeline and jump to a marker.
2. Ability to chain together multiple Hype files and jump from one to other. This would allow creation of larger projects without bloating a single file. (I still harp back to the good old days of Macromedia Director, where massive interactive projects could be created from multiple interconnected Director files).
3. A simple way of jumping directly to a specific time in a video or sound file.