reg_sens (_region_actions, "nudge-forward", _("Nudge Later"), sigc::bind (sigc::mem_fun (*this, &Editor::nudge_forward), false, false));
reg_sens (_region_actions, "nudge-backward", _("Nudge Earlier"), sigc::bind (sigc::mem_fun (*this, &Editor::nudge_backward), false, false));
reg_sens (_region_actions, "nudge-forward", _("Nudge Later"), sigc::bind (sigc::mem_fun (*this, &Editor::nudge_forward), false, false));
reg_sens (_region_actions, "nudge-backward", _("Nudge Earlier"), sigc::bind (sigc::mem_fun (*this, &Editor::nudge_backward), false, false));