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Navigation: ESL Documentation > ESL Programmers Guide > Appendix A ESL Business Graphics > Customizing a Graph

Marker Lines

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You can place marker lines anywhere on a scaled axis in a graph. These marker lines (see illustration at the beginning of Customizing a Graph) highlight a particular set of data points or visually partition points on the graph.

Variable	Initial Value	Description
GMarkerLines	false	Boolean variable that specifies whether or not the graph is to display marker lines. It must be used in conjunction with other marker variables.
GXMarkers GYMarkers	false false	Arrays of Boolean variables that enable or disable markers for the data elements of the marker's data set. The marker's data set is the first GDataX or GDataY data set that is not used for graphed data. Elements in the marker's data set are specified by the array subscript.
GMarkerColor	1 (red)	String variable that specifies the color for the marker lines displayed on the graph. You can specify only one color for all the marker lines.
GMarkerLineWidth	4	String variable that specifies the width of the marker lines displayed on the graph (in coordinate positions). You can specify only one width for all the marker lines on a graph.