\TITLE
Hint and Explanation Demo
\TF A T
This is a true/false question.
\HINT
This is a hint (of sorts). 
\WHY
This is an explanation, though, perhaps  not
a very good one.
\TF A T
This question has a hint, but no explanation.
\H
And this is it!
\TF A T
This question has neither a hint nor an explanation.
\TF A T
The hint below opens a large window
\HINT H=400 W=400
This window has room for a BIG hint!
\TF A T
The hint button below links to another URL.
\HINT URL=AnotherPage.html