Issue #70: Orientation - Looking for feedback

Hi all -

I'm looking to collect feedback and comments on Issue #70:  Orientation
<https://github.com/w3c/wcag21/issues/70> prior to creating a pull request
and moving this proposed MATF SC forward in the process.

If you haven't already, please take a look at the proposal and leave any
comments you have in the GitHub Issues thread for Issue #70:  Orientation
<https://github.com/w3c/wcag21/issues/70>.

Thanks,

Marc Johlic
IBM Accessibility Research