Draw picture.- With this command you will be able to see background images and pictures (previously loaded BMP files).
Eliminate picture.- With this command you will eliminate background images and pictures (previously loaded BMP files).
XY and XZ view.- These command are to get views of the XY and XZ planes.
The Sources Menu lists the possible noise sources: the point source and the line source.
Point source.- This is a point source. The source size is small if we compare it with the size of the area in which we are simulating (point source). If you click this button, the next dialog box is shown: