The 5th edition of Vocabulário Ortográfico da Língua Portuguesa (VOLP) was published on March 19, 2009, clarifying  the points that were obscure in the official text of the Spelling Agreement.  In Portuguese (Brazil) Style Guide available on the Language Portal, the topic Portuguese Spelling Reform was updated accordingly to conform with the procedure and methodology followed by VOLP 5th edition. The main changes to Microsoft original instructions (from December 2008) refer to the use of hyphen before the prefixes “re“ and “co“, as well as “não” functioning as a prefix.