Hi, by working in an large script, sometimes it's usefull to have two parts of this script side by side. It's not possible to Tile/MDI SciTE. SciTE has an option to arrange the windows by opening an second instance (see chapter "# Window sizes and visibility" in properties). But by using this, you can't open the first instance maximized. And by closing the second instance has the other one always a small size. Thats why i've made a launcher, to arrange two instances of SciTE automatically. With