README in pdf-reader-0.6 vs README in pdf-reader-0.6.1

- old
+ new
@@ -204,9 +204,13 @@
 The order of the callbacks is unpredicable, and is dependent on the internal
 layout of the file, not the order objects are displayed to the user. As a
 consequence of this it is highly unlikely that text will be completely in
 order.
 
+Occasionally some text cannot be extracted properly due to the way it has been stored, or the use
+of invalid bytes. In these cases PDF::Reader will output a little UTF-8 friendly box to indicate
+an unrecognisable character.
+
 = Resources
 
 - PDF::Reader Homepage: http://software.pmade.com/pdfreader
 - PDF::Reader Rubyforge Page: http://rubyforge.org/projects/pdf-reader/
 - PDF Specification: http://www.adobe.com/devnet/pdf/pdf_reference.html