mmap(subpage_map_projection = "cartesian", subpage_x_max = "20", subpage_y_min = "25", subpage_y_max = "75", subpgae_x_axis_type = "regular", subpage_y_axis_type = "regular", subpage_x_min = "-20") maxis(axis_grid = "on", axis_orientation = "vertical", axis_grid_line_style = "dot", axis_grid_thickness = 1, axis_grid_colour = "grey") maxis(axis_grid = "on", axis_orientation = "horizontal", axis_grid_line_style = "dot", axis_grid_thickness = 1, axis_grid_colour = "grey")