Represents value data in graphical data
data marker
data marker
A data marker shows where a data value is on a chart, such as a line chart.
The legend is the function that identifies the data marker for each series in a chart.
data marker
nothing
A data point.
a label
On a chart, such as a line chart, a data markers shows where the point is, usually done with a dot or a box or a cross. A data label will show the actual value of that data point. So on a line chart you might see a data marker on the line to indicate it is a value from the data and with it a data label will tell you what the actual value is.
http://www.sharpie.com/enUS/MSDSSheets/default.html
They are malleable.
The individual values that are on the chart itself are known as points or data points. A group of related values together make up a series.