When you choose Render Page from the File menu, Fargo not only builds the parents and the bar cursor headline, it now builds any documents subordinate to the bar cursor headline.
This means, for example, I can build just the Content Management section of the Fargo Docs, without having to rebuild each page manually, or building the entire site. Both were time-consuming and annoying. Fixed.
The Render Page command is a biggie, and it deserves a little advertising in the left margin. I chose the Share icon from Font-awesome.
There were other possible choices, for example the world icon, to indicate that it's being published to the web.
I went with Share because that seemed closest to where this command is today, and where it's likely to go in the future.