- legend.pos
- One of - "right",- "left",- "top",- "bottom"(outside
the plotting area),- "topleft",- "topright",- "topmiddle",- "bottomleft",- "bottomright", or- "bottommiddle"(inside the plotting
area).
 
- style
- One of - "white",- "light",- "dark_blue", or- "dark_gray".- "white"sets the background to white,- "light"to light gray,- "dark_gray"to dark gray,- "dark_blue"to dark blue.
 
- base_size
- base font size, given in pts. 
- base_family
- base font family 
- base_line_size
- base size for line elements 
- base_rect_size
- base size for rect elements