Jon Peltier has instructions for adding a vertical line to a chart:

http://www.peltiertech.com/Excel/Cha...s.html#AddLine

Kimhazeldene wrote:
How can I insert a vertical line in excel, which I would like to combine with
toggle buttons to see how a data changes over time


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Debra Dalgleish
Excel FAQ, Tips & Book List
http://www.contextures.com/tiptech.html