The Back button allows the learner to move back step-by-step in the manner defined in the main or parallel path. The Back button is inactive on the very first page of the main path. On the very first page of a parallel path the button will initiate an action to jump back to the last visited page in the main path (for this to work, it is neccessary, to place the Back button on the relevant page in main path in order for it to be registered correctly).