play (func 3))
<em class="red">error</em><em class="gray">: unbound variable func</em>
</pre>
<p>To get around this, either load the file into curlet: <code>(load "use-func.scm" (curlet))</code>,
or use with-let to place the definition in rootlet: <code>(with-let (curlet) (define (func x) (+ x 1)))</code>.
</p>

<p>Meta keys are a problem on the Mac.  You can use ESC instead, but that requires
super-human capacities.  I stared at replacement control keys, and nothing seemed
right.  If you can think of somet