The basic charts now allows you to view all data ‘cumulated’. The cumulative view can easily be obtained by selecting ‘Cumulative’ in the “More” settings.
The cumulated feature was mainly added to be used with the new breadth indices. For example: the ‘NYSE advance – decline’ index ($ADDN) shows you the difference between the number of advancing issues and the number of declining issues for each day . When you show this data in cumulated mode, as can be seen here, you can get the ‘Advance Decline Line’ ( or ADL ):