15% of Windows Vista written in INTERCAL?

        DO .1 <- #123
        DO ABSTAIN FROM WRITING IN
        DO COME FROM (123)
(100)   DO WRITE IN .1
        PLEASE .2 <- #1
        DO %50 .2 <- !2$#0'
        PLEASE DO (42) NEXT
        DO ABSTAIN FROM READING OUT
        PLEASE COME FROM (69)
        DO READ OUT .1
        DO REINSTATE READING OUT
(123)   PLEASE REINSTATE (100)
(42)    DO (43) NEXT
        DO FORGET #1
        DO (105) NEXT
        PLEASE GIVE UP
(105)   DO (106) NEXT
(69)    DON'T GIVE UP
(106)   PLEASE DO RESUME "'?"!1~.1'~#1"$#1'~#1"$'".1~.1"~#1'
(43)    DO RESUME .2

Above is a sample INTERCAL program. A Microsoft insider leaked information to the public that 15% of Windows Vista is written in that horrible language! Surprise Can you believe it?