...
| Option | Description |
|---|---|
| Properties | When selecting this option will show properties of the online background image map as shown in Figure 2. The online background map can be changed by selecting from the drop-down list of the Online Source. |
| Zoom Level | When selecting this option will show the zoom level of the online background image map as shown in Figure 3 |
| Create New Splines Layer | Create a new spline layer in the layer control panel |
| Create New Overlay Layer | Create a new overlay layer in the layer control panel |
| Turn All Layer Off | Show off all existing layers in the layer control panel |
| Turn All Layer On | Show on all existing layers in the layer control panel |
...