[OS X TeX] fonts

juan tolosa juantolo at me.com
Sun Jan 11 19:30:30 EST 2015

I want to add a Sans Serif font to a document. Looking at the "Fonts" and "Manage Fonts" tools, I found Gill Sans.
However, something naive, such as

\font\gm=Gill_Sans

(this is the way I have been introducing fonts in TeX so far, say \font\sc=cmcsc10 to use Small Capitals)

just did not work.

How can I use the wide set of fonts available in the ``Fonts'' list?

Thanks,
Juan