This file is not part of the official gnuplot distribution.

This ZIP file contains two gnuplot EXEs.
1. gnuplot.exe
   This is the standard 8086 EXE compiled with Borland C++ 3.1.
2. gnuplotx.exe
   This is a 386 EXE compiled with EMX/GCC.  It uses the VESA 1.4
   graphics library written by Johannes Martin.  To use this
   EXE you need a card with a VESA driver or a separate
   VESA TSR program that returns enough information about the 
   available modes.  Some cards with built in VESA drivers do 
   not return enough information for the graphics library to work.
   Run vesatest.exe to find out which modes are available.
   Finally run gnuplotx.exe.  The vesa driver will automatically
   select the 640x480 mode.  To select other modes use
     set term vesa 261
   where the number is the VESA mode number obtained from the 
   vesatest.exe output.

A MS-Windows version of gnuplot also exists in a separate ZIP file.