Refresh the Firefox view-source window

I spend a lot of time looking at HTML source while developing sites. It’s pretty much refresh the browser, right click, view source, find my mistake, close the view-source window, fix the mistake, rinse, repeat.

It’s amazing I haven’t stumbled upon this before. I accidentally hit F5 in the view-source window and it refreshed the source code.  That takes out about half of the steps of my usual process.