*
* @throws IOException If an IO error occurs during parsing.
*/
protected COSBoolean parseBoolean() throws IOException
{
COSBoolean retval = null;
char c = (char)pdfSource.peek();
if( c == 't' )
{
String trueString = new String( pdfSource.readFully( 4 ), "ISO-8859-1" );
if( !trueString.equals( "true" ) )