To open Twistory, double-click on the file called "index.ttt." If you open the Twistory icon instead, you get a dialog box in which you must select a file. Open the file called "index.ttt."
Instructions
Everything else should be self-explanatory. If you have any other questions, please consult the instructions. They are in HTML format, so a computer and a web browser (not provided) are required.