Have you heard of a magic word CAFE BABE? They are the magic numbers of the Java class files. See below link for the interesting story behind it:
And the words, CAFE and BABE both actually make up the below hexadecimal numbers:
(CAFEBABE)16 = (3405691582)10
DEAD BEEF (actually an hexa decimal number) is the magic word used by Texas Instrument in MAC Addresses.
Oh, the other word in my title, DOCFILE0 is actually a pseudo word = D0CF11E0. That is magic word used in the header of Windows EXE files. See here for more on that.