Change here the inside and outside visibility for a single layer or a list of layers.
To modify a layer, click over the graphic area to open a menu and choose a layer,
or write its identification (name and number) on the 
Layer entry. To modify
a list of layers, press the button 
List (after creating the list of layers
with 
Layer->Select). Parameters for empty entries or 
Local choices
remain unchanged.
To change a layer name write the new name in the 
Layer entry,
followed by the layer number (GAMGI needs the number to identify the layer).
To change the name for a list of layers, press 
List first
and then write the new common name in the 
Name entry.
Visibility
The 
Out and 
In parameters control the visibility 
to the outside and to the inside of the various layers in a window. 
The visibility 
Out parameters are used only by the current layer, 
to control how to attempt to see the other layers: 1) 
All (try 
to see completely the other layers); 2) 
Partial (try to see the 
other layers in a blurred way, to distinguish them from the current 
layer); 3) 
None (do not see the other layers).
The visibility 
In parameters are used only by non current layers, 
to control how the current layer is allowed to look inside them: 
1) 
All (the layer can be seen clearly); 2) 
Partial (the 
layer can be seen in a blurred way, to distinguish it from the current 
layer); 3) 
None (the layer cannot be seen from the outside).