print( "Testing Multilevel IF:");
if (3 < 5)
    print("1.1: ok");
    if (3 < 4)
        print("1.1.1: ok");
    endif
    print("1.2: ok");
endif

if (3 < 5)
    print("2.1: ok");
    if (4 < 2)
        print("2.1.1: failure");
    else
        print("2.1.1: ok");
    endif
endif