User:Erik G/Sandbox 1

The Taskwindow module is intended to allow programs which do not call SWI Wimp_Poll to be pre-emptively scheduled in the RISC OS desktop. -- PRM TaskWindow: Introduction and Overview

Most RISC OS users will know this from the interactive window they use to type CLI commands in. A server application (usually the default text editor) is used to display the output of the CLI (and of the commands typed in) and accept the keyboard input and send it to the CLI.