Pasting Negative Infinity

In the Level setting for audio in the Viewer you can type in all sorts of values to change the level of your audio. But you really can't type in "-inf" if you want the audio from certain channels gone completely while you monitor playback.

But you can drag the slider all the way to the left to "-inf", then highlight and copy (Command + C) then while it's on your clipboard you can paste it (Command+V) into other clip's channel's level settings.

When you paste it into a Textedit document set to plain text, you'll even see that it's "-inf", yet you can't type letters into this box in Final Cut Pro. Weird.

Copy Negative Infinity, then Paste Negative Infinity in spite of ram limitations!