This choice opens a screen, by which you can change several
of the program parameters. Using the keyboard, choose the option you want
to change with the arrows. `[space]' changes the value of the chosen
option. Use `[Enter]' to finish the changes, or `[Esc]' to leave and forget
any changes you may have made. With the mouse, click on the option name to
choose it, or on the option value to change. Note that, if swapping has
been disabled in the configuration file, it can not be switched on in this
menu.