From my point of view, Ctrl+R is a more portable shortcut than F5 because it is available on virtually all platforms, such as Mac, KDE, GNOME, Windows or Maemo. Thus I don't see the need to support a Windows-centric shortcut as well, also considering modern keyboards tend to not have that key, or only through a modifier.
From my point of view, Ctrl+R is a more portable shortcut than F5 because it is available on virtually all platforms, such as Mac, KDE, GNOME, Windows or Maemo. Thus I don't see the need to support a Windows-centric shortcut as well, also considering modern keyboards tend to not have that key, or only through a modifier.