"Lights" container
From TrainzOnline
lights {
0 {
corona "corona_green.tga"
}
1 {
corona "corona_yellow.tga"
}
2 {
corona "corona_red.tga"
}
}
Defines what coronas are attached to what light attachment points.
In this case, light '0' will be shown with file 'corona_green.tga' (found in the asset directory) attached to attachment point 'a.light0' in the signal mesh. The signals container will refer to it as '0'.