I'm new at the excode editor. I want to be able to add block comments (/* */), so I found an extension.

But I can't seem to be able to add it to xcode.

Everything leads me to Xcode -> Preferences -> Extensions but there's nothing there!

Elsewhere, apparently BlockComment should be in the Key Binding section, but it isn't.

Some other research says that I should see BlockComment in the editor drop-down menu and that's not there.

Can this be done?