fetching multiple bodyparts simultaneously using IMAP

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network

Internet

protocol

can I fetch multiple body parts of a single email message using IMAP commands.

For example, is there something like -
fetch 1:1 body[RFC822.HEADER 1 2 3...]

and finally plz tell me if i am right or not considering the following case.

if i know the bodystructure than the body part numbers of various parts are represented by their position in the bodystructre. periods are added for nested body part numbers.

example: bodystructure( (part 1) (part 2) (part 3 (part 3.1) (part 3.2) ) .....)
am i correct?

please help me.
thanks in advance.