global_actions.register_action (common_actions, X_("previous-tab"), _("Previous Tab"), sigc::mem_fun (*this, &ARDOUR_UI::step_up_through_tabs));
global_actions.register_action (common_actions, X_("next-tab"), _("Next Tab"), sigc::mem_fun (*this, &ARDOUR_UI::step_down_through_tabs));
+ global_actions.register_action (common_actions, X_("toggle-editor-and-mixer"), _("Toggle Editor & Mixer"), sigc::mem_fun (*this, &ARDOUR_UI::toggle_editor_and_mixer));
+
/* windows visibility actions */
global_actions.register_toggle_action (common_actions, X_("ToggleMaximalEditor"), _("Maximise Editor Space"), sigc::mem_fun (*this, &ARDOUR_UI::toggle_editing_space));