[OPTIONAL]:This function draws the grids for the graph and associated text.
[OPTIONAL]:This function draws the grids for the graph and associated text.Uses the coordinate and scale information from the graph structure and prints the horizontal and vertical grids (and the respective scaled values for the grid). The arguments to the function decide what information is printed. See the programmer's manual for a diagrammatic description.
Note that with the variable options it is possible to print each graph in a variety of combinations -see the header file for enumerated types