const int perc_lo=25,
          perc_hi=87;

struct GM_instr {
  int gm_nr;
  const char *name;
  int col;
};

struct GM_perc {
  int gm_perc_nr;
  const char *name;
  int col;
};

extern GM_instr gm_instr[128];
extern GM_perc gm_perc[perc_hi-perc_lo+1];
