You can also add components without dragging the component from the Doc-menu and dropping it on the editor.
From the next output of any component, drag the cursor and drop. And instantly a menu of the different components will appear. And from the menu, select a component and the component will appear on the editor connected with the mother component.
If you drag your cursor from the button output of any component and drop it on the editor, then the button component will appear on the editor connected with the mother component.
NB. The Button component is not present in the Doc-menu.
