This is deprecated in favour of sprintf . For example line 2i means draw a line 2 inches long in the current direction. The maximum width and height of the picture are taken from the variables maxpswid and maxpsht . Initially these have values 8.5 and 11. Scientific notation is allowed for numbers.
Arcs now have compass points determined by the circle of which the arc is a part.
Circles and arcs can be dotted or dashed. In TeX mode splines can be dotted or dashed. Boxes can have rounded corners. If no rad or diam attribute is given, a radius of boxrad is used. Initially, boxrad has a value of 0.