Great add-on! Rated 5 out of 5 stars

Add action “Add download file form URL”, is it not possible?
Response : For example, in text file, I copy a link of a PDF and if a paste the link in the address bar, Firefox reads the file in the tab, not download it.
It's possible to add a menu or field and download directly with an URL.

This review is for a previous version of the add-on (0.1). 

What exactly should that action do?