I downloaded the .zip file on my mac's hard drive.
By HDA you mean
http://hda/ ?
Would I use the HDA to both to (1) unzip and (2) move the files to the document root ?
Or should I unzip first (which creates a just MathJax subdir) and then use HDA to copy.
Then there's the permissions issues. When using terminal, I've gotten around some of the permissions issues when doing some of my recent file work, not by using chmod, but using sudo. I guess that's irrelevant if I'm going to use HDA to do, but not sure how. There is an HDA button on my HDA page, but haven't learned about it yet.
I'll try searching forum or wiki for directions.