The settings are stored in a file called .ef_properties in
the users home directory. Should this file become corrupted, you
may start the program clean by using the -np (NoProperties)
command line argument.
This file is completely re-written every time the program quits.
If you have a favorite configuration that you wish to save, you
can do that either by making a copy of the .ef_properties file,
or by making the file unwritable.
If you wish to exit the program without saving its current properties, you should de-select the Save properties item of the Program :: Program properties sub-window.