		function replaceConfig(config)
		{
			// Deep-copy the config so we can edit it
			var configCopy = copy(config);
			configCopy.chunkSize = parseInt(configCopy.chunkSize);	// parseInt VERY important so we don't concatenate strings!
			if (!config.step && !config.chunk)
				configCopy.chunkSize = null;  // disable Range header if not streaming; bad values break IIS - see issue #196
			this._handle = new ParserHandle(configCopy);
			this._handle.streamer = this;
			this._config = configCopy;	// persist the copy to the caller
		}
The software saves user-provided information into a Comma-Separated Value (CSV) file, but it does not neutralize or incorrectly neutralizes special elements that could be interpreted as a command when the file is opened by spreadsheet software.