import system'culture;

public program()
{
    string s1 := "alphaBETA";

    // Alternative 1
    console.writeLine(s1.lowerCase());
    console.writeLine(s1.upperCase());

    // Alternative 2
    console.writeLine(s1.toLower(currentLocale));
    console.writeLine(s1.toUpper(currentLocale));
    console.readChar()
}