 the command key is used instead of control:
            </p>
            <ul>
                <li>Ctrl + A: select all</li>
                <li>Ctrl + C: copy selected nodes</li>
                <li>Ctrl + X: cut selected nodes</li>
                <li>Ctrl + V: paste at cursor position</li>
                <li>Ctrl + S: save project to file</li>
                <li>Ctrl + Z: undo</li>
                <li>Ctrl + Y: redo</li>
                <li>Delete: delete selected nodes</li>
                <li>Spaceba