setting the font in Tkinter

[Rick Pasotto]

How do I set the default font for a window and all its widgets? The
system default is too small.

-- 
"A man who has nothing he is willing to fight for, nothing which he
cares more about than he does his own personal safety, is a miserable
creature, who has no chance of being free unless made and kept so by
the exertions of men better than himself. As long as justice and
injustice have not terminated their ever- renewing fight...human
beings must be willing...to do battle for the one against the other."
		-- John Stuart Mill
		   Rick Pasotto email: rickp at telocity.com