The coordsys and logsys packages draw Cartesian and logarithmic
coordinate systems, number lines, and grids in a variety of
styles.

New in this version:

 * New commands for drawing intervals.
 * Improved interaction with Maple (exporting curves from Maple).
 * Improved algorithm for avoiding collision between tick marks
   and arrowheads.
 * Automatics interaction with the color package.
