It's supposed to chose the best form that it knows how to handle. It will choose HTML over text, for example.
From http://www.w3.org/Protocols/rfc1341/7_2_Multipart.html, section 7.2.3:
'The user agent should either choose the "best" type based on the user's environment and preferences, or offer the user the available alternatives. In general, choosing the best type means displaying only the LAST part that can be displayed.'
It's supposed to chose the best form that it knows how to handle. It will choose
HTML over text, for example.
From http:// www.w3. org/Protocols/ rfc1341/ 7_2_Multipart. html, section 7.2.3:
'The user agent should either choose the "best" type based on the user's
environment and preferences, or offer the user the available alternatives. In
general, choosing the best type means displaying only the LAST part that can be
displayed.'