Quote marks, whether bars or >>> markes are used to identify previously included content in messages. These are generally added by
your email/message program on sending automatically. How/if you can change them will depend on what email program and version
you're using. In MS Outlook Express, for example,

Tool=>Options=>Send=>Mail Sending Format

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<<"ablecybertaut" <ablecybernaut@discussions.microsoft.com> wrote in message
news:A8F57C15-B2A3-4C16-9162-1A67B4FF23C1@microsoft.com...
How can I eliminate the vertical lines that appear on messages containing
images that are forwarded several times? The lines are objectionable to me
and others.
--
ablecybernaut>>
--

Bob Buckland ?:-)
MS Office System Products MVP

*Courtesy is not expensive and can pay big dividends*