hi frank,
Or are you more thinking about something like this: http://smc04.ircam.fr/scm04actes/P3.pdf
right - i m exactly talking about this.
For this Pd's data structures have proven to be quite useful in the work of for example Orm Finnendahl (e.g. in his composition "grep"). The list archive also has some examples of note symbols realized as data structures.
thx i ll have a search/look
best
e