I've got a chart that updates with weekly data and I want to have a vertical line and text box as a "flag" or "marker" signifying that an event took place on a certain week. Of course, I can manually draw one and move it every week, but that's not smart... I'd like for the line and text box to move with the data point automatically. For example, I'd like a vertical red line for the Feb 1 data point and a then a text box attached to the data point that says "Snow Storm on East Coast." It will "stick" to the Feb 1 data point and I won't have to move it every week.