Where is lynx.cfg stored on mac?
I did

find /usr/local -iname lynx.cfg -print


(because brew installs stuff to /usr/local)

and it showed me

/usr/local/etc/lynx.cfg
/usr/local/Cellar/lynx/2.8.9rel.1/etc/lynx.cfg


Then I did

ls -l /usr/local/etc/lynx.cfg


which showed me this:

lrwxr-xr-x 1 luomat admin 38 Sep  4 00:05 /usr/local/etc/lynx.cfg -&gt; ../Cellar/lynx/2.8.9rel.1/etc/lynx.cfg


So I would say the answer is /usr/local/etc/lynx.cfg