It was standard for MS-DOS, the VT100, and many other things of that era. It was common with X on UNIX-like systems in the early 1990s. Once WYSIWYG document p

It was standard for MS-DOS, the VT100, and many other things of that era. It was common with X on UNIX-like systems in the early 1990s. Once WYSIWYG document processing became popular, people wanted computers to mimic normal paper documents.