-setxkbmap -layout 'us,ru' -variant ',common' -option 'grp:toggle,compose:rctrl,lv3:menu_switch'
+setxkbmap -layout 'us,ru' -variant ',common' -option 'grp:toggle,grp:shifts_toggle,compose:rctrl,lv3:menu_switch'
+# Terminate X session on Ctrl+Alt+Backspace
+#setxkbmap -option terminate:ctrl_alt_bksp