The OS/2 Command Line Utilities is a suite of many useful command-line driven utilities for 32-bit OS/2.
A full blurb can be found here.
The 32-bit Command Interpreter is a drop-in replacement for the 16-bit CMD that IBM supplies with IBM OS/2. Many of the CMD tools make use of the 32-bit Unicode Console API.
A full blurb can be found here.
A screen group is an IBM OS/2 concept of a VIO output buffer, KBD input queue, and MOU input queue. Each process is a member of exactly one screen group.