These primitives effect the axis and grid, drawn in the Draw zone.
|Draw X and Y axis with division size of nn pixels.
Draw X (horizontal) axis with division size of nn pixels.
Draw Y (vertical) axis with division size of nn pixels.
Set axis color to n. (See colors)
Return true if X axis is drawn, else false.
Return true if Y axis is drawn, else false.
|Grid mm nn
| Draw a grid with division sizes of mm x nn pixels.
Set grid color to n. (See colors)
Return true if grid is drawn, else false.
Underlined Set can be removed from a primitive name in order to return information.
eg. SetHeading sets the heading of the turtle. Heading returns the heading of the turtle.
A 'ClearScreen' is performed after drawing any axis or grid. This results in ShowTurtle and screen and pen color as as set up in Preferences.