[PD] data structures and library abstraction question

[Rich E]

Hi all,

I just had a look at Frank's data structure tutorial, in which he suggests
making a library abstraction for all structure templates.  This seems like
something I have to do for some patches I'm working on, but it would also be
nice to just be able to check if the library is open, and if not, to open
it.

So the question is, is there a way to check if a certain abstraction is
already open?

Regards,
Rich
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