The player buttons allow you to execute and undo the steps in the sequence of stored transactions. Buttons for playing forward or backward are on either side of the (Record Recent Model Changes as a New Transaction) button. The outer two buttons allow you to jump to the beginning or end of the current transaction list. Clicking any of the transaction buttons themselves plays or reverses the transactions up to the selected transaction.

Selecting the (Re-fit) option re-frames the Graph and View every time a transaction step is played.