ola,
Data structures recently got "visibility" switches, which could open an interesting new way of workarounds here. Imagine you build a clickable area, either using [tot] or an array of radio buttons, maybe hidden with a canvas. On top of them, you could put your data structures whose visibility is then switched on and off according to mouse actions.
Yves would say: "hacking ..."
hey, man, i would never reproach anyone to hack something... that's the essence of what we do, i would just say : 'mm, interesting, but is that fast and efficient?'
anyway, i can't see how you could simulate an object like sonogram~ with the data structures ( and can you cut & paste ? ), mmm..
cheers, sevy