public static bool IsSubSuperScriptCompatible(this string text)
{
IEnumerable <char> allowedCharacters = Enumerables.Create(' ', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '-', '=', '(', ')');
return(!text.Except(allowedCharacters).Any());
}
