Build Websites with Hugo: Code in chapter two won't run

I’m working through Mr. Hogan’s book, and the code has been running fine, until I got to the section “Using Content Blocks and Partials” in chapter 2. When I substituted the following code for ‘index.html’, I got a blank output:

{{ define “main” }}

{{ .Content }}

{{ end }}

Hugo didn’t give any error messages, just blank output. If I commented out the above code, and restored the previous html, I would get output. Also, I found I would get wonky results if I copied and pasted from the PDF, so I typed this code by hand, and still no output. What do I need to do to get output from Hugo using ‘partial’ blocks?

I have installed Hugo 0.77 on Windows 10 (64-bit). Thanks!

-Chris Adams.