The AMPL processors and solvers in this directory are "student" versions that restrict problem sizes (e.g., to 300 variables and 300 general constraints and objectives) and are intended for noncommercial use. For serious commercial use, you should (eventually) license commercial versions, even if your applications never exceed the limits of the student versions. See the AMPL web site http://www.ampl/com/ampl/ for extensive information about AMPL, including descriptions of extensions available in current versions. File ampl.exe (here compressed by gzip to ampl.exe.gz) is a Win32 student version of the AMPL processor. It runs under Windows 95, NT, XP, etc. (but not 3.x); with the help of exhelp32.exe, it can run DOS solvers (such as those that formerly accompanied the AMPL book) as well as Win32 solvers. It runs in a console window and in the scrolling window provided by sw.exe. On linear problems, it relaxes the size restriction to 500 x 500. File cplex.zip contains cplex.exe (a Win32 student version of CPLEX 11.0.1 for use with AMPL as solver "cplex"), cplex70.dll, and LICENSE.txt, and a README.txt that provides extensive documentation and more pointers. File gjh.exe computes gradients, Jacobian matrices and Hessians of nonlinear problems and makes them available to AMPL as parameters. File gurobi.zip contains a student version of the GUROBI solver for linear and mixed-integer problems; it limits problem sizes to 500 x 500, unless you have a GUROBI license that allows larger problem sizes -- and have set $GRB_LICENSE_FILE to the (full path) name of the GUROBI license file (which can be done within an AMPL session by an "option GRB_LICENSE_FILE ..." command). See the README.gurobi.txt file in gurobi.zip for installation instructions. File minos.exe is a Win32 student version of MINOS (for use with ampl.exe). For pointers and more details, see files README.1st and README.minos in directory /netlib/ampl/solvers/minos and see web page http://www.ampl.com/ampl/REFS/abstracts.html#ampl-minos . File lpsolve.exe is a Win32 solver based on lp_solve, an LP and MIP solver by Michel Berkelaar. For pointers and more details, see /netlib/ampl/solvers/lpsolve/README. File sw.exe provides a scrolling window suitable for running simple "console binaries", such as ampl.exe, cplex.exe, minos.exe, and lpsolve.exe. For more details, see readme.sw. File ampltabl.dll provides our "standard" ODBC table handler. It can be used with recent Win32 versions of AMPL and should appear in the same directory as ampl.exe. For more details, see http://www.ampl.com/ampl/NEW/tables.html File wampl.exe is an old MS Windows 3.x Student Edition version of AMPL.