{
void (*DelayMS)(long, boolean);
double (*TickDiffUS)(double);
{
void (*DelayMS)(long, boolean);
double (*TickDiffUS)(double);
void (*Blt)();
void (*ScrollTo)(int, int);
void (*ScrollTowards)(int, int, double);
void (*Blt)();
void (*ScrollTo)(int, int);
void (*ScrollTowards)(int, int, double);