span> nbest() <span class="keyword">const</span> = 0;
<a name="l00199"></a>00199 
<a name="l00200"></a>00200   <span class="comment">// add one line to the current context</span>
<a name="l00201"></a>00201   <span class="keyword">virtual</span> <span class="keywordtype">bool</span> add(<span class="keyword">const</span> <span class="keywordtype">char</span>* str) = 0;
<a name="l00202"></a>00202 
<a name="l00203"></a>00203   <span class="comment">// return size of tokens(lines)</span>
<a name="l00204"></a>00