This 32 bit DOS implementation of RLaB was built using emx0.9a(2) and
GNU gcc 2.6.3.  Both DPMI (rsx) and VCPI (emx) DOS extenders are
supplied. If your installed memory manager supports VCPI calls emx will
be used, otherwise rsx will be called.

To install unzip in your root directory.  Assuming installation on
drive C: place the following commands in your autoexec.bat file :-

SET EMX=C:\EMX\BIN\EMX.EXE
SET RSX=C:\RSX\BIN\RSX.EXE

A VESA compliant graphics card is required to enable on screen plotting.
If your video card requires a TSR program to enable VESA calls this may
be placed in autoexec.bat also.

Modify rlab.bat in the rlab directory to suit your configuration.  The
supplied example (which assumes that 4dos is installed), installs a
removable VESA TSR driver and sets up the RLaB search paths before
calling the program.  The RLAB_PAGER environment entry will be used to
display the on-line help.  If RLAB_PAGER is undefined rlab tries to use
less as the default pager (versions of less for MSDOS can be found at any
SIMTEL mirror in the msdos/txtutl subdirectory).

[ NOTE: easyr.bat, in the rlab directory, is a simpler bat file for those 
       like me (Ian) who are not so good with DOS. ]

If you wish to run the program under Microsoft windows a sample pif file
is included.  Use the windows pif editor to edit this to suite your
particular configuration.  To install click on `new program item` (in
File/New in the Program Manager) and use the browse facility to select
rlab.pif.  Select an appropriate icon etc. in the usual manner.

To test the installation under DOS change to the rlab directory and run
rlab.bat.  To start under Windows click on the rlab icon.

At the command prompt type :-

>load("test")

which will load and execute the commands in the test file.

To test the graphics type :-

>rfile plplot
>rfile plot_tes

The graphics screen should default to 1024*768 if your card is capable
of this.

All tests should run succesfully under both DOS and Windows.

Type help at the prompt to access the on-line help system.

The RLaB manual (in postscript format) and a short manual page can be
found in the doc subdirectory.

If any problems are found in this DOS version which are not present in the
UNIX version of RLaB please let me know.

Many thanks to Ian for producing such a useful environment for numerical
work!
