auto_xy_LabelDataset labels the first or last point of a 2D dataset with its name.
hText is the handle of the created text object or 0 is the function failed.
hData is the handle of a 1D or 2D dataset.
rvOffsetCM is a vector with two elements:
|rvOffsetCM||Offset of the text in x direction in centimeters.|
|rvOffsetCM||Offset of the text in y direction in centimeters.|
If bShowHelpLine is TRUE (1) a line will be drawn from a datapoint to the text.
nType is one of the following values (default is 1):
|0||Label first data point.|
|1||Label last data point.|
|2||Label last data point and set the angle of the text to the gradient of the curve.|
rsXPos Draws the text at the specified x coordinate. The coordinate is specified in the coordinatesystem of the diagram.