Feature request from CRYX2, posted on GitHub Sep 18, 2015
Hello, i'm currently testing 1.0 beta and I think who all the textarea of block could be improved with a Syntax Highlighter like CodeMirror or Ace Editor.
it would be a big improvement that should not take away too much work.
Comment from tkacheva, posted on GitHub Jun 16, 2016
Internal ticket for improving dev experience MAGETWO-54478