void main() {
    IO.println("Missing a quote);
}

// From Groundwork, chapter 1 (ch01-your-first-programs), box 9.
// This example is from Groundwork, licensed CC BY-NC-SA 4.0.
// Run with: java ch01_09.java
// This fails on purpose: it does not compile—A missing closing quote. The error message is the lesson.