The 16 colors is the default. This is my first use of this DOS extender, so please let me know of any problems. Once upon a time, I made a NeXT version of the Surface Evolver, and it still compiles, so I include it here. This will produce an Evolver executable and several sample datafiles. You have to start Evolver from a Terminal window as usual with a command line .
Much output goes to the terminal window.
Evolver comes up with a graphics window with a command line box under it. Click on the window to make Evolver the front application. This brings up the menus, which can do the single letter commands. The command line box can be used to type in any command. Any command you can give Evolver on other systems can be used here, except s for show.