Cost of messages when in USA

SMARTY document explaining add-ons for non-EU overseas travel puts on page 20 of the document the USA as Roaming band 3.  Page 21 says that for Roaming band 3 messages are 40p.  Page 23 puts USA as International band 2 and on page 24 International band 2 countries are to be charged 6p a message.  I am confused.