The Settings
menu
Set background color
The background color of the main layout window is the Java default for a
Swing JPanel. If you're not happy with this then this function will change the
color and GridBagger will remember the color between sessions. For backward compatibility
with earlier Gridbagger versions
the background color is not saved when saving a layout.
Use chained undo
The default way in which the undo function works is to bring back the
last constraints change to a component and if undo is selected again the
constraints will toggle back so the undo itself is undone.
By switching on undo chaining, the GridBagConstraints for a component can
be progressively altered and each change is remembered by GridBagger. The undo function
can then be used to step beck through the chain of changes.
The undo function is described more fully on the edit menu page.
Use color in components
When a component is added to a layout it is given a random color which will
always be slightly different to any other color in the layout.

After adding about 90 components to a layout the color generating algorithm starts to have
problems finding colors that are reasonably different from existing colors and
the addition of components may become unacceptably slow. The way around this is
to turn off the use of color. Of course you might want to do this anyway if the
colors are annoying.
At end of source line
Different platforms and different editors expect different
line terminators in ASCII files. This option allows the user to set the
terminator that will be used when copying source to the clipboard or
saving to a file.
Component highlight
By default the component highlight colors are animated. This option turns off animation for
those users who don't like it.
Look and feel
Java supports different "look and feels" for the user interface. GridBagger offers
the choice of using the cross-platform L&F (AKA "Metal") or using the system
specific look and feel eg. Windows, Mac, Motif. The author suggests playing with this
option to find which L&F suits you.