'' block-mapping-start-token() '?' scalar-token(plain=#t, style=#f, value="canonical") ':' scalar-token(plain=#t, style=#f, value="1.23015e+3") '?' scalar-token(plain=#t, style=#f, value="exponential") ':' scalar-token(plain=#t, style=#f, value="12.3015e+02") '?' scalar-token(plain=#t, style=#f, value="fixed") ':' scalar-token(plain=#t, style=#f, value="1230.15") '?' scalar-token(plain=#t, style=#f, value="negative infinity") ':' scalar-token(plain=#t, style=#f, value="-.inf") '?' scalar-token(plain=#t, style=#f, value="not a number") ':' scalar-token(plain=#t, style=#f, value=".NaN") block-end-token() ''