#define BEGIN {
#define IF if
#define THEN {
#define ELSE } else {
#define FI };
#define END }
#define DO {
#define OD };
#define WHILE while
#define FOR for
#define REPEAT do {
#define DURING } while
#define REF *
#ifndef TRUE
#define TRUE (1)
#define FALSE (0)
#endif
#define BOOL int
#define NULL (0)