Issue pull request for branch syntax-highlighting-markdown-55326700
Issue pull request for branch syntax-highlighting-markdown-55326700

[Delivers #55326700](https://www.pivotaltracker.com/story/show/55326700)
[Delivers #55338092](https://www.pivotaltracker.com/story/show/55338092)

minireference/polytexnic,softcover/polytexnic,softcover/polytexnic,minireference/polytexnic