cker uses this byte to indicate restart position -
          this has been made redundant by the 'Position Jump' effect.
128       Pattern table: patterns to play in each song position (0..127)
          Each byte has a legal value of 0..63 (note the Protracker
          exception below). The highest value in this table is the
          highest pattern stored, no patterns above this value are
          stored.
(4)       The four letters "M.K." These are the initials of
          Unknown/D.O.C. who changed t