Plan 9 from Bell Labs’s /usr/web/sources/contrib/bichued/root/sys/lib/python/email/test/data/msg_37.txt
Content-Type: multipart/mixed; boundary=ABCDE --ABCDE Content-Type: text/x-one Blah --ABCDE --ABCDE Content-Type: text/x-two Blah --ABCDE --ABCDE --ABCDE --ABCDE Content-Type: text/x-two Blah --ABCDE--
