Gonna need more clues: What flavour distro are you running? Which WM?
If you're in something like ubuntu try this (fossmint.com)
Gallium OS. Not sure what ver, etc. because I've been drinking pretty heavily since I posted the question.
I'll check your link tomorrow and get back to you.
Gallium OS
Simple answer:
sudo apt install gnome-font-viewer
It has an "install" button.
Set it to open font files from your file mangler and you'll be overloading your system with ridiculous new fonts in no time.
I shall try this immediately. Thanks!
EDIT: This froze my crappy machine so I had to restart.
:-)
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