The running System
This may sound like cheating, but think of the whole running system as a process node. It gets created once and then updated repeatedly.
A Root Patch
The root patch defines the process.
Create And Update
As we are still looking at things:
Again: a part of the patch is only executed once when the system starts. The other part is then called over and over again. Can you tell which is which?
vvvv user: when creating or resetting the node from within vvvv the process gets reset: "Create" is called. From then on "Update" is called each vvvv frame.