The new feature allows educators to annotate code, making it easy for students and teachers to communicate and collaborate on coding projects remotely. Annotations enable real-time feedback loops, allowing educators to provide immediate guidance and support to students as they learn to code online. The feature is designed to mimic the 'shoulder-to-shoulder debugging' experience of traditional classroom settings, but with the flexibility of remote learning. By integrating annotations into their teaching workflow, educators can create a more scalable and effective way to teach coding skills.