Related links from Language Reference topics to ArchSpec (and vice versa)

In reading through the the archSpec and Language Reference topics about subjectScheme, it was very awkward to navigate between the two sections.
Related links would help.

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Best, Kris Kristen James Eberlein Chair, OASIS DITA Technical Committee Principal consultant, Eberlein Consulting www.eberleinconsulting.com +1 919 682-2290; kriseberlein (skype)