# Objective-Pascal interoperability

[Agila University track](https://edu.agilaos.com/track.php?track=10&lang=en)

About 15 minutes per lesson. Predict, run, change, explain, then complete the check in University.

- [Lesson 1: Enable Objective-Pascal deliberately](lesson-1/lesson.html)
- [Lesson 2: Messages, selectors, and runtime contracts](lesson-2/lesson.html)
- [Lesson 3: Test a platform bridge honestly](lesson-3/lesson.html)