self-paced reading that allows for re-reading

Greetings,

Right now I am running a self-paced (each button press triggers a word or a sentence to appear on the screen with the corresponding reading time simultaneously recorded, therefore reading happens in a forward proceeding fashion) reading experiment on Superlab.

I want to incorporate a button that also allows the readers to go back to the previous word or sentence with the time spent on re-reading recorded. I am not sure whether this feature has been embedded in the current version. If not, I am expecting some expert advice on alternative solutions.

Thanks so much ahead!

~Steve

SuperLab will only be able to re-present the entire trial. It will not be able to go back to an individual word.