 | Normal: when the mouse is not on any objects. |
 | On object: when the mouse is on a graphical object. If you click your mouse button, you will be able to select the
object. |
 | On curve: when the mouse is on a curve. If you click the mouse button, you will be able to select
the curve. |
 | On data: when the mouse is on a data point along a curve. The value(s) and index number of this data point will be
reported in the status bar. |
 | On X-axis: when the mouse is on a x-axis. If you click your mouse button, you will be able to select the axis. |
 | On Y-axis: when the mouse is on a y-axis. If you click your mouse button, you will be able to select the axis. |
 | On vertical handle: when the mouse is on the vertical handle of a selected object. |
 | On horizontal handle: when the mouse is on the horizontal handle of a selected object. |
 | On diagonal handle: when the mouse is on the diagonal handle of a selected object. |
 | On diagonal handle: when the mouse is on the diagonal handle of a selected object. |