HP-27S Numeric Integration?

[DMaier]

The Museum's HP-27S write-up claims that the calculator features numeric integration. I don't believe that's a built in feature of the calculator? (Actually, it looks like the feature comparison table agrees with me.) However, it would definitely be interesting to have the 27S/19B solver and numeric integration in the same calculator.

There's an example in the Technical Applications manual of using the solver for integration, but I don't think that's enough to describe numeric integration as a feature.