Terminal | Tools - Window History

Window history allows you to browse through previous screens.

Travelport Mobile Agent

To access Window History, open the Terminal Menu, go to the Tools tab and touch "Window History".

TTS Web Agent

To access Window History, go to the Tools Menu and click on the "Window History" icon.

The rest of the experience is pretty much the same in Travelport Mobile Agent and TTS Web Agent.
It will activate an overlay on the right side of your screen that allows you to access the previous windows. 

img: Travelport Mobile Agent

img: TTS Web Agent

When the user chooses a previous screen he will be able to view its content and select text to copy/paste. To hide the window history overlay, just tap/click on the overlay arrow.