I read the tutorial on how to associate elements from different diagrams. (Associated diagrams and relationships between their elements). The instructions made use of packages. I'm wondering does this defeat the purpose of having the function that allows for associating an element with a diagram by right clicking on the element? What is the difference?
I answered your question here:
is it possible to have a demo in gif like the other tutorials?
it is a format so pleasant and fast to understand ....
Yes, more animated tutorials are being prepared. They will be added during this year.
Could this also work for subdiagrams?
I would love to have subdiagrams to actions in activity diagrams where slots (perhaps as input pins) in the subdiagram are synchronized with the ones on the upper level.
Or is that by any chance already possible and am I just not seeing the functionality?
The synchronization is bidirectional and can be used for any element in any diagram, but it updates only the content of individual elements (name, stereotypes, tagged values, attributes, etc.). New relations between elements are not inserted into the another diagram automatically - you have to insert them manually.