Mike has done a brilliant job on those articles.

Note that these articles (and a few more) are all to be found at the DataFlex wiki in the REST category:

We also did some work on the JSON category:

I'd say more will come over time.
Note that you are welcome to contribute to the wiki (if you don't already have an account at the wiki website, then please shoot either Mike or me an email and we'll get you setup)

Our intention is that the wiki will always have the latest info and with code syntax highlighting so that the code is easier to read from the website.