Create a Viewport with Scales based on Data
Determine the number of levels in an object.
Convert Viewport Location to Device Location
List the names of grobs on the display list
Convert Between Different grid Coordinate Systems
Encapsulate calculations and generating a grob
Edit the Description of a Grid Graphical Object
Create Grid Graphical Objects, aka "Grob"s
Generate a Sensible ("Pretty") Set of Breakpoints
Create Sets of Coordinates for Grid Grobs
Calculate Points on the Perimeter of a Grob
Create a Unit Describing the Width of a Grob
Create a Unit Describing a Grob Boundary Location
Create a Viewport with a Standard Plot Layout
Utility function to resolve the size of a raster grob
Create a Unit Describing the Width and Height of a String or Math Expression
Maintaining and Navigating the Grid Viewport Tree
Return the points that would be used to draw an Xspline (or a Bezier curve).