[Cfp-interest 2863] online versions of scaled reduction and augmented arithmetic examples

[David Hough CFP]

Fuller discussion intended as background documents -

https://754r.ucbtest.org/background/scaled-reduction-example.txt
https://754r.ucbtest.org/background/augmented-arithmetic-example.txt

Shorter version intended for TS-4

https://754r.ucbtest.org/background/scaled-reduction-example-short.txt
https://754r.ucbtest.org/background/augmented-arithmetic-example-short.txt

The last is not actually shorter, pending feedback 
about what could be removed.

These are where I'll post updates as I continue to get feedback and find bugs.
It's the overall direction that's of greatest concern now.