ll equivalent.</span></i>
<i><span style='color:#898887;'>// [x, y, z] is a shorthand for (x, y, z, ()).</span></i>
<i><span style='color:#898887;'>// The comma is a right-associative operator creating a pair.</span></i>

<i><span style='color:#898887;'>/*****************************************************************************/</span></i>
<i><span style='color:#898887;'>/* The following shows how quoting works. */</span></i>

<b><span style='color:#000000;'>let</span></b> factorial = \n <b><span style='