This feature is a tool for inserting a index line in your chart.
Index Line feature
When clicking at this button, you will be able to select position and orientation of the index line. For instance, you can select a position at 50 and a vertical orientation. In this way, the index line will be placed in the middle of the chart.
For technical requirements read more about the Office Extensions plaftform.
Compatible: Office 2013/2016/365 (32/64bit).
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