it's one line per account, I was just sloppy when copy pasting and didn't change the second line >.<. Will change that now. Some proxies only have an address and port so you would use this template:
account1,password1,proxyaddress.com:port
If the proxy also has username and password use this template:
account1,password1,proxyuser:[email protected]:port
Where proxyuser is the username and proxypassword the password. It's mostly for paid proxies where they give you a username/password for authentication.