-extern int ShowRedDiskCounter, ShowPanel;
-extern long DisplayMinX, DisplayMaxX, DisplayWidth;
-extern long DisplayMinY, DisplayMaxY, DisplayHeight;
+
+extern int ExplosionShake, ExplosionShakeMurphy;
+extern boolean NoDisplayFlag;
+
+extern long DisplayMinX, DisplayMaxX;
+extern long DisplayMinY, DisplayMaxY;
+
+extern void subDisplayLevel();
+extern void ScrollTo(int, int);
+extern void ScrollTowards(int, int);
+extern void SoftScrollTo(int, int, long, int);