unusally empty Weston-Super-Mare during bank holiday lockdown

The video provides a brief introduction to the course, setting the stage for what will be covered.

What does the phrase 'of course' imply in a conversation?

In what situations might someone respond with 'of course'?

How can the phrase 'of course' affect the tone of a conversation?

Can 'of course' be used in formal communication? Why or why not?

What are some alternatives to the phrase 'of course'?