"comment">// return i-th tag-id as string</span>
<a name="l00225"></a>00225   <span class="keyword">virtual</span> <span class="keyword">const</span> <span class="keywordtype">char</span>*   yname(<span class="keywordtype">size_t</span> i) <span class="keyword">const</span> = 0;
<a name="l00226"></a>00226 
<a name="l00227"></a>00227   <span class="comment">// return token at [i,j] as string(i:token j:column)</span>
<a name="l00228"></a>00228   <span class="keyword">virtual</span> <span class="keyword">const