| -display <display> | - sets the display to use | |
| -x_virtual | - forces use of a X virtual display Xvfb that will not display anything but -draw_save will still work. Xvfb is automatically started up in PetscSetDisplay() with this option | |
| -draw_size w,h | - percentage of screeen (either 1, .5, .3, .25), or size in pixels | |
| -geometry x,y,w,h | - set location and size in pixels | |
| -draw_virtual | - do not open a window (draw on a pixmap), -draw_save will still work | |
| -draw_double_buffer | - avoid window flickering (draw on pixmap and flush to window) |