| Variable | Initial Value | Description | 
| GLegendOn | true | Boolean variable used to specify whether or not the legend is to be displayed. | 
| GLegend | "" | Array of strings representing the names of the data sets being graphed. These names are displayed in the legend. | 
| GLegendFont | "medium" | String variable that assigns a font to the legend. | 
| GLegendColor | 27 (Window's Foreground) | String variable that assigns a color to the text in the legend. |