extern int getSequenceLength(int sequence);
extern boolean isSnappingSequence(int sequence);
+extern void Trace(char *Source, char *Message);
+extern void ReportError(char *Source, char *Message);
+
+extern int Min(int A, int B);
+extern int Max(int A, int B);
+
extern int fiGraphic[];
extern int aniSnikSnakTurningLeft[];
extern int aniSnikSnakTurningRight[];