int mathed_string_ascent(MathTextCodes type, MathStyles size, string const & s);
int mathed_string_descent(MathTextCodes type, MathStyles size, string const & s);
-bool MathIsInset(MathTextCodes x);
bool MathIsAlphaFont(MathTextCodes x);
bool MathIsSymbol(MathTextCodes x);
-bool MathIsRelOp(unsigned char c, MathTextCodes f);
void drawStr(Painter & pain, MathTextCodes type, MathStyles siz,
int x, int y, string const & s);