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renpy.rollback

Function:

renpy.rollback

():

Call this to cause a rollback to occur. Only returns if rollback is not possible, otherwise control will be transferred to the rollback point.

init python:
    def rollback_overlay():
        ui.textbutton("Back", clicked=renpy.rollback, xalign=1.0, yalign=0.0)

    config.overlay_functions.append(rollback_overlay)

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