plots a graph of the function between the start and end points. The number of points defaults to 100.
graph settings color y yellow m magenta c cyan r red g green b blue w white k black linestyle - solid : dotted -. dashdot -- dashed marker . point o circle x x-mark + plus * star s square d diamond v triangle (down) ^ triangle (up) < triangle (left) > triangle (right) p pentagram h hexagram