With the Repeat Last Command command, you can enter the previous command without the need for a menu or toolbar. You can do command repetition in five different ways.
Clicking the mouse wheel
Pressing the Enter key on the keyboard
Pressing the right mouse button with the Ctrl key on the keyboard while the Use Right Botton for Context Menu is checked in the General Settings dialog.
Pressing the right mouse button when Use Right Botton for Context Menu is not checked in the General Settings dialog
Right-click on the Repeat Last Command line in the menu.