_idx_58"></a>
<a name="%_idx_60"></a><a name="%_idx_62"></a><a name="%_idx_64"></a></p>
<p>
Although there is a separate boolean type,
any Scheme value can be used as a boolean value for the purpose of a
conditional test.  As explained in section&nbsp;<a href="r5rs-Z-H-9.html#%_sec_6.3.1">6.3.1</a>, all
values count as true in such a test except for <tt>#f</tt>.
This report uses the word ``true'' to refer to any
Scheme value except <tt>#f</tt>, and the word ``false'' to refer to
<tt>#f</tt>. <a name="%_idx_