[R-SIG-Mac] How do I find the default font of R console?

[C W]

Hi,
How do I find the default font of R console?  I changed the font by
accident.  There is no reset.  And surprisingly, it's nowhere found on
google.

I know there is a library, but where exactly is this folder?

I am aware there a list of recent fonts, but none looked right to my eyes.

> sessionInfo()
R version 3.0.0 (2013-04-03)
Platform: x86_64-apple-darwin10.8.0 (64-bit)

locale:
[1] en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base

loaded via a namespace (and not attached):
[1] tools_3.0.0


Mike