| `-mono` | forces monochrome rendering on color displays. | 
| `-gray` | requests grayscale rendering on grayscale or color displays. | 
| (Grayscale displays receive monochrome rendering by default.) | |
| `-clear` | requests that the window be cleared momentarily before a | 
| new plot is displayed. | |
| `-raise` | raises plot window after each plot. | 
| `-noraise` | does not raise plot window after each plot. | 
| `-persist` | plots windows survive after main gnuplot program exits. | 
Example:
         gnuplot*gray: on
gnuplot also provides a command line option (-pointsize v
) and a
resource, gnuplot*pointsize: 
v
, to control the size of points plotted
with the points plotting style.  The value v is a real number (greater
than 0 and less than or equal to ten) used as a scaling factor for point
sizes.  For example, -pointsize 2 uses points twice the default size, and
-pointsize 0.5 uses points half the normal size.