Jack's Homework #9

Click and drag to create a bezier vertex.
Hold Alt/Option key to adjust control point individually (after a vertex is created).
Use Ctrl/Cmd + A to select all vertices.
Use Arrow keys to move selected vertices.
Use Backspace key to remove selected veretx/vertices.
Press Esc key to deselect spline(s).
Press Enter key to close selected spline(s).