typedef unsigned char uchar;
typedef unsigned int ui;
ui lcm(ui, ui);
typedef struct axz{int start; unsigned short dur; char chan; uchar trk; 
union {
  struct{uchar freq; char loud; uchar quit;} n;
  uchar prog;
  short pitch;
  struct{uchar * odp; short cc; uchar subtype;} opaque;
} o;
struct axz * next;} note;
typedef struct {char type; uchar trks; int den;} BP;
typedef void reg(note);
typedef void seeNote(note);
void Write(char *, note *, BP *);
note* Read(char *, BP*);
void ex(int);
void scan(seeNote, note*, int);
void aug(note, note**);
void Free(note**);
void ex(int);
#define ProgramChange 0xffff
#define PitchWheel 0xfffe
#define OpaqueStuff 0xfffd
#define maxdur 0xfffc