I downloaded MathJax from the official site, unzipped it, opened the folder and loaded 'MathJax.js' into C3. There is a plethora of files in the unzipped folder, I doubt it is correct to include MathJax.js only? Anyway, I installed HTMLElement and InjectCSS, specified the file (not the path, just the filename, like in the plugin demo) in InjectCSS, enabled 'Text like HTML' in HTMLElement and gave it some LaTex - nothing happens, the text is being displayed as normal text.
This should be trivial, what am I doing wrong here?
Side note: Strange issue, the LaTex code shown in the sidebar of the HTMLElement is always shown with a double slash, although it is clearly written with one slash only in the editor, see picture.