What requests do browsers' “F5” and “Ctrl + F5” refreshes generate?

Question

Is there a standard for what actions F5 and Ctrl + F5 trigger in web browsers?

I once did experiment in IE6 and Firefox 2.x. The F5

Answer 1

I've implemented cross-browser compatible page to test browser's refresh behavior (here is the source code) and get results similar to @some, but for modern browsers: