 can draw part of the
curve in the incomplete corner, and part in the inside corner (state 85),
instead of having the inside corner draw a single curve constrained by small
space.</p>

<p>To reduce a set of bit flags to a valid 161-state form, use this formula:
<blockquote><code>flags &amp;= (flags &lt;&lt; 1) | (flags &lt;&lt; 7) | (flags &gt;&gt; 1) | 85</code></blockquote></p>

<a name=256></a><h3>256-state joining</h3>

<p>This type allows corner connections to be independent of the sides. It is
almost 