Updated Strategy for DITA 1.2 Proposal 12020 (Reuse of small text)

Hi

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At the last TC meeting, attending members converged on a new strategy
for addressing this issue. I took the action item to summarize the new
strategy and to send that summary out to the list for further review and
discussion.

1. The original scope for 12020 needs to be expanded beyond the nesting
of keyword. Although nested keywords would provide one solution, it does
not address many of use cases for reusing bits of text outside teh
context of keywords, e.g. reusing a text bit in