inition whose first component is equal to the result of converting <CODE>key</CODE> to lower case. If it finds such a definition, it assigns the replacement text to <CODE>key</CODE>, adjusting the case of the first character to match the case of the first character of <CODE>key</CODE>. Otherwise, it does nothing.
</P>

<A NAME="dictionary_stdio_filter"></A>
<H4><CODE>dictionary_stdio_filter</CODE></H4>

<P>You can express a dictionary filter as a <A HREF="../classes/stdio_filter.html"><CODE>stdio_filter</CO