How do I turn off the border around the emulation window?

TTWin does allow you to disable the border around the emulation window.

To disable the border please follow these steps:

1. Select Configure > Preferences from the TTWin program menu.
   
2. On the Display tab, under the Display layout group, uncheck the Frame border box.
3. Apply the changes, then click OK.

The border should no longer be around the emulation window.