* packages</h3>

<p>
Several packages under <code>go</code> have slightly revised APIs.
</p>

<p>
A concrete <code>Mode</code> type was introduced for configuration mode flags
in the packages
<a href="/pkg/go/scanner/"><code>go/scanner</code></a>,
<a href="/pkg/go/parser/"><code>go/parser</code></a>,
<a href="/pkg/go/printer/"><code>go/printer</code></a>, and
<a href="/pkg/go/doc/"><code>go/doc</code></a>.
</p>

<p>
The modes <code>AllowIllegalChars</code> and <code>InsertSemis</code> have been removed
from