Palm VII Handbook page 150

If a message has x
readable characters
500 or fewer characters
500 - 50,000 characters
More than 50,000
characters
Page 142
Then this happens:
The entire message is downloaded.
<Message Complete> appears at the
end of the message.
The first 500 characters are
downloaded. A message at the end tells
you how many readable characters are
left to be retrieved. You can download
as much of the rest of the message as
you want or ignore what's left.
Palm.Net service returns the message
to the sender as undeliverable.
Marks the end of a message
Tap right arrow to view the
next message, left arrow for
the previous one
Query Applications and the iMessenger™ Application