To immediately reload current language file (lets say, you translating Light Alloy to another language) without need in restart Light Alloy, use this combination: Ctrl+Shift+L.
This function is disabled by default. To enable it, you need to open LA.xml (Light Alloy mustn't be running!), find
and change it toNow, start Light Alloy. To reload skin, when you made some changes in it, you just need to press F5.