[1] X Sharp/Introduction ( 版) <http://wiki.codeglide.com/X_Sharp/Introduction#XML-oriented_Programming_Introduction>
<xsp:variable name="inbox" type="node" select="document('imap://imap.gmail.com?user=admin&pass=secret')/folder[@name='INBOX']"/>[2] X Sharp/Examples ( 版) <http://wiki.codeglide.com/X_Sharp/Examples>
<xsp:for-each select="document('imaps://imap.gmail.com?user=jkirk@gmail.com&pass=secret')/folder[@name='INBOX']/mail[@seen = 'false']">[3] RFC 4468 - Message Submission BURL Extension () <https://tools.ietf.org/html/rfc4468>
burl-param = "imap" / ("imap://" authority)
; parameter to BURL EHLO keyword
burl-cmd = "BURL" SP absolute-URI [SP end-marker] CRLF
end-marker = "LAST"