The following options are available to close Cashbook:

Option 1

1. Click File.
   
2. Exit Program menu option.
   

Option 2

1. Click on the red X in the top right hand corner of the screen.
   
2. Follow the remaining prompts.
   

Option 3

1. If for some reason (eg. computer has frozen) you are unable to close Cashbook using either of the above options, make sure Cashbook has focus, with the main splash screen showing  and then hold down the Ctrl, Alt and F12 keys on the keyboard at the same time.
   
2. Click Yes to confirm.
   

If the above 3 options still don't allow you to close Cashbook, click on the following link https://support.practicalsystems.com.au/Articles?id=651