HintMaskAt
uint32 HintMaskAt(uint32 x, uint32 y) const;
uint32 hintMask = fField->HintMaskAt(fKeyboardX, fKeyboardY);
uint32 hintMask = fField->HintMaskAt(x, y);
uint32 hintMask = fField->HintMaskAt(x, y);
uint32 hintMask = fField->HintMaskAt(x, y);
uint32 hintMask = fField->HintMaskAt(x, y);