E16 system tray

I'm using E16 and I like it very much.
Now I want to use the systray box, but I can't find any doc about the .cfg file for the use of the systray and the syntax for adding icon's files in it.
I hope to be in the right forum.

systray uses iconbox configuration.

The systray actually uses the same configuration as the iconbox.

The icons that show up in there are obtained from the running applications that have been programmed to use the systray.

As far as I know, there isn't any way to override the icons that show up in there.