text_prop_t text_prop[TEXT_PROP_LAST]; /* text properties */
char ylegend[200]; /* legend along the yaxis */
char title[200]; /* title for graph */
+ char watermark[100]; /* watermark for graph */
int draw_x_grid; /* no x-grid at all */
int draw_y_grid; /* no x-grid at all */
double grid_dash_on, grid_dash_off;