The RtfDataCache interface must be implemented by classes wishing to
act as caches for the rtf document data.
version: $Id: RtfDataCache.java 2776 2007-05-23 20:01:40Z hallm $ author: Mark Hall (mhall@edu.uni-klu.ac.at) author: Thomas Bickel (tmb99@inode.at)
Write the content of the cache into the OutputStream.
Parameters: target - The OutputStream to write the content into. throws: IOException - If an error occurs reading/writing.