// Unchanged comment.
f1();

// Changing a single word here.
f2();

// A single comment about something.
f3();

/* A multiline comment
 * whose indentation changes.
 */

// An example environment variable: FOO="x-y"

// A single line comment. It has become
// a big block comment. Lorem ipsum dolor sit amet,
// consectetur adipiscing elit

/** A doc comment.
 *
 * This line has changed.
 */