ry users; they are invoked automatically by the library to indicate to <A HREF="../guide/concepts.html#filter_concepts">Filters</A> and <A HREF="../guide/concepts.html#device_concepts">Devices</A> that a sequence of data is about to end. This gives Filters and Devices an opportunity to free resources or to reset their states in preparation for a new character sequence. Filters and Devices which perform output can use the opportunity to write additional data to the end of a stream.
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<P>The details regar