First, I don't understand how a new link-type is
registered with the system.
Being a subclass of PRLink is enough. See the class-side of the PRLink
hierarchy for details.
Secondly, in general, I'm not clear on how to
extend the markup system. Are
their specific places I should look to get a better understanding of this?
http://www.lukas-renggli.ch/blog/extendingpierparser
Is there some kind of overview of the internal
organization of the markup
system that will help guide me in how it all works together?
http://scg.unibe.ch/archive/masters/Reng06a.pdf (Chapter 3)
Lukas
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Lukas Renggli
www.lukas-renggli.ch