Change the window options

In Options menu click Window. Window options dialog will be showed

Select appropriate options. Press Ok button. The default values can be selected using Defaults button. The options will be persisted after the program quitting

Here is several options :

Set confirming exit
In opened dialog turn on Confirm exit when closing window check box. When window will be closing Exit confirmation dialog will be showed.
Show tool bar
In opened dialog turn on Show tool bar check box. Press Ok button. Tool bar will be showed.
Set centering window on screen
In opened dialog in location section turn on center window on screen radio button. On next start of program window will be on center of screen.
Randomize window location
In opened dialog select Randomize window location radio button. Press Ok button. At the next start of program window will be showed in any location.
Set saving window location
In opened dialog in location section turn on save window location radio button. On next start of program window location will be the same as before quitting
Set saving window size
In Opened dialog in window section turn on save window size check box. On next start of program window size will be the same as before quitting