sdlBasic editor, as SciTE, uses the default key bindings defined in Scintilla, so keyboard commands mostly follow common Windows and GTK+ conventions. All move keys (arrows, page up/down, home and end) allows to extend or reduce the stream selection when holding the Shift key, and the rectangular selection when holding the Shift and Alt keys. Some keys may not be available with some national keyboards or because they are taken by the system such as by a window manager on GTK+. The user.shortcuts setting may be used to assign a key to a function. Note that Home key behaviour is changed by the vc.home.key option. Keyboard equivalents of menu commands are listed in the menus. Some less common commands with no menu equivalent are: