RAND_BETWEEN
fDelay = RAND_BETWEEN(STAY_TICKS_MIN, STAY_TICKS_MAX);
fDelay = RAND_BETWEEN(HIDE_TICKS_MIN, HIDE_TICKS_MAX);
fDelay = RAND_BETWEEN(SHOW_TICKS_MIN, SHOW_TICKS_MAX);
uint16 size = RAND_BETWEEN(fMinSize, fMaxSize);
iconFrame.OffsetTo(RAND_BETWEEN(0, maxX), RAND_BETWEEN(0, maxY));
int32 index = RAND_BETWEEN(0, fVectorIcons.CountItems() - 1);