Lifetime rules (section 4.2.3)

In rule 3, "A connection reference which occurs if another AudioNode is
connected to it", does that mean a connection in either direction? Or does
it mean a node has a connection reference if it has input nodes, but it
doesn't have a connection reference if it only has output nodes? This needs
to be clarified.

I'm not sure what the purpose of this section is. Does it affect anything
that script could observe? Or can we describe the deletion of nodes as
simply an optimization that UAs perform when they can prove a node is no
longer relevant? The latter is more in the spirit of GC and other automatic
resource management schemes; if it holds, we could just remove this section.

Rob
-- 
Jesus called them together and said, “You know that the rulers of the
Gentiles lord it over them, and their high officials exercise authority
over them. Not so with you. Instead, whoever wants to become great among
you must be your servant, and whoever wants to be first must be your
slave — just
as the Son of Man did not come to be served, but to serve, and to give his
life as a ransom for many.” [Matthew 20:25-28]