You mean, select the graphical objects, that make up a *single*
instance of a struct-object? That is not possible, however you can
select any complete instance and get the pointer to that instance by
reading the [struct] object's outlet, which defined that data
structure.

So I could contrive this with mouse co-ordinates and a database of pointers using traverse...interesting! It is a shame that I can't affect individual instances, because then I could implement k-means clustering graphically...

Best,
Ed