Incremental: Adds the line subtotals to the previous total at the end of each line. For example, if Line 6 score is 105 and the previous 5-line total is 512, the new total becomes 617 (512 + 105).
Cumulative: Replaces the previous total with the current cumulative score. For example, if the score at the end of Line 6 is 617, it replaces the previous 5-line total of 512.
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