Represents a point in two-dimensional space. When first created,
the object defaults to the origin "0 0", which is at the bottom
left of the space.
ABCpdf uses the standard Adobe PDF coordinate space. The origin
of this space is at the bottom left of the document. Distances are
measured up and to the right in points. Points are a traditional
measure for print work, and there are 72 points in an inch. For
further details, see the Coordinates section
of the documentation.