Use Case for Alternative Media

Hi Guys, so my homework was to fill out section “Adding Alternative Media"
How does this look for a use-case?

Adding Alternative Media
  As a publisher of accessible content, I need to add content such as a
    braille style sheet, image descriptions, or video captioning (text /
    descriptive audio) to a PWP previously published by a third party.

  Braille
       There is an important difference between just sending the raw text to a braille display which will translate the text to the default braille grade and language the braille display is using and having a pre-formatted braille rendition using a specific braille table.

        Example
        As a socially minded publisher creating a Math textbook, I wish to include my math equation examples in Braille as well as MathML since not all reading systems fully support MathML.  I learn that Nemeth Braille is primarily used and have added separate preformatted Nemeth Braille examples in my publication.


Thanks
EOM

Charles LaPierre
Technical Lead, DIAGRAM and Born Accessible
E-mail: charlesl@benetech.org
Twitter: @CLaPierreA11Y
Skype: charles_lapierre
Phone: 650-600-3301