Chapter 3. Who can shave and take a haircut on Chol HaMoed? Who can do laundry? And what items can be laundered? Plus, oddly, a newborn who can have a haircut on Chol HaMoed. Also, the positive commandment of celebrating the holiday as a community, and how it can override an individual's obligation in mourning, for example. Which begins to open up the conversation about mourning in the context of Chol HaMoed too.