-extern int subAnimateElectrons(int si);
-extern int subDrawAnimatedElectrons(int si);
-extern int subDrawElectronFromAbove(int si, int bx);
-extern int subDrawElectronFromBelow(int si, int bx);
-extern int subDrawElectronFromLeft(int si, int bx);
-extern int subDrawElectronFromRight(int si, int bx);
-extern int subDrawElectronTurnLeft(int si, int bx);
-extern int subDrawElectronTurnRight(int si, int bx);
-extern int subElectronFromAbove(int si, int bx);
-extern int subElectronFromBelow(int si, int bx);
-extern int subElectronFromLeft(int si, int bx);
-extern int subElectronFromRight(int si, int bx);
-extern int subElectronTurnLeft(int si, int bx);
-extern int subElectronTurnRight(int si, int bx);