Draw v2.2.2
By Mark Shroyer <mark@gael.port5.com> http://gael.port5.com/
9.20.2000

This program will graph many equations on the euclidean coordinate plane
for you.  Syntax is as follows:

draw( <expression> )

where <expression> is the expression you would like to have graphed.
For example, to graph a hyperbola, you might use the following command:

draw( x^2/16 - y^2/4 = 1 )

The hyperbola will be graphed with the current graph window settings. As
of version 2.0, it is possible to graph equations that cannot be defined
as any combination of functions of x; for example, the command draw( x=5 )
will produce an output consisting of a single vertical line passing
through the point (5,0). In addition, the graphs of conics will no longer
contain any holes as they used to in versions prior to 2.0.

================
Version history:
================

Version 2.2.2, September 20, 2000
 - Now turns off all stat plots before executing draw.

Version 2.2, August 17, 2000
 - Version 2.2 is a small improvement in program size and a magnificent
   improvement in speed over version 2.1; functionality remains the same.

Version 2.1, August 12, 2000
 - I realized that, even after the changes I made in version 2.0, real
   mode is still required for accurate results. Real mode must now be
   active for the program to run; if real mode is not active, Draw will
   prompt for permission to switch modes.

Version 2.0, August 11, 2000
 - Fixed bug that only allowed program to be run in real mode.
 - Modified code to allow use with language localization active.
 - Now graphs equations that cannot be defined as one or more functions
   of x.
 - Holes are no longer visible in the graphs of conic equations.

Version 1.1, March 16, 2000
 - Changed code to speed up the graphing process of the program.

Version 1.0
 - Original release.


Mark Shroyer
November 12, 2000