Google ANDROID 2.3.4 - Manual (Page 148)

Gmail 148
AUG-2.3.4-105 Android User’s Guide
to change whether you are replying, replying to all, or forwarding the message.
Attachments are included automatically in messages you forward, but not in
messages you reply to.
If you want to interleave your message with the text of the old one, you can touch
Respond inline. However, this removes any attachments or formatting in the
original message.
You can add one or more people to an ongoing conversation by replying to all and
then adding the new people’s addresses to the reply.
All of the messages in the conversation, up to the one you are replying to or
forwarding, are included in the new message; any messages that follow the
message you forward are omitted.
2 Touch the Send icon .
Enter your reply.
Uncheck to send your reply without
including the original message.
Touch to convert quoted text to text-
only and interleave your response with
the original.
Touch to send your response or to save it
as draft.
Touch to change whether you are
replying, replying to all, or forwarding.