Overlay manager 

Here you specify what is shown on the plot, like palettes, filename, date, time etc.

You can also specify which item goes on top, by using the arrow buttons

DoubleArrows.gif 


to put the items higher or lower in the plotting sequence.

If e.g. an item is very low on the list (high number), it will be plotted on top of an item higher on the list, thus creating a different picture than if the two were switched around.