In those program items, which are showing two-dimensional graphics, you may open a window to adjust the coordinate system by clicking the button Coordinate System at the toolbar or by choosing options in the popup menu (right mouse button).
Range in x- or y-direction
Scaling of the x- or y-axis linear or logarithmic
DEG (degree), RAD (radiant) or GON (grad)
Line type (Lines, Dot lines, Points, None)
Grid spacing in x- and y-direction
In the basic setting dx=0 and dy=0, the grid spacing is automatically adjusted.
Colors of the grid lines, the canvas, the fonts etc.
The Accuracy/Resolution of the diagrams.
Scaling of the printout in b/w or color.
Color and line width of the diagrams.