Vintage early computer programming software MKS Tookit, mint!

Rare MKS Toolkit version 4.1, still mint in the original shrink wrap from the early DOS command line computer era (before graphical user interfaces). The box is dated 1992. According to the box, this contains "KornShell Command Interpreter", "MKS Vi Editor", "MKS Awk Prototyping Language", "Awk Compiler", "Compatible with UNIX and POSIX", Windows Icons and more.