-First things first: you'll need to create a new subkey for your
-current key, if you don't already have one. If you already have a GPG
-key, you can add a subkey with:
+First things first: you'll need to create an "authentication" subkey
+for your current key, if you don't already have one. If you already
+have a GPG key, you can add an authentication subkey with: