To add empty lines, like carriage returns, you use line breaks, as above. Note I've used "br /" rather that the more common "br"? This is XHML and backwards compatible with HTML. Saves work in the long run, believe me!

You can indent using spaces using using an ampersand next to nbsp; as below.

    But don't you overboard. When you are more experienced, there are far better ways to indent