What are Audacity's noise reduction default settings?

I played with Audacity’s noise reduction settings without taking the precaution of writing down the defaults. I’d like to change the settings back to the defaults, but I can’t remember what they are.

While this question was asked in other forums, the response pointed to a link that gives me a “Forbidden” error. Can someone please just type in what Audacity uses by default, before we play around?

Thank you! Unfortunately, I am not knowledgeable about audio editing, so I need all your help.

The default settings are shown in the manual.
Assuming that you are using the current 2.1.0 version of Audacity, see: http://manual.audacityteam.org/o/man/noise_reduction.html