Some un-provoked brain-storming follows (a bit unstructured)>> Take a data-screen. You turn the computer on. A large button appears in the middle (could be marked “start”). Click it, and all the items you choose to associate to it appears, encircling the startbutton. Clicking one of them shows you items associated with that item, and so forth. Holding down Ctrl shows you click-history. Alt shows you other active sessions. Ctrl+Alt shows you History with links to were you “branched” auxiliary sessions. Holding down another buttong while dragging the mouse over a link deletes the link. Some similarity to your “le Button”. Well quite alot actually. Perhaps The two could be combined. Combine the button with a pen and an in-built camera. the pen registers your writing, linking it into your current session. camera shoots pictures to combine to your text.