In 1979 Dave Winer became an employee of Personal Software, where he worked on his own product idea named VisiText, which was his first attempt to build a commercial product around an "expand and collapse" outline display[REF] and which ultimately established outliners as a software product.
In 1987, at the height of the company's success, Winer sold Living Videotext to Symantec[REF] for an undisclosed but substantial transfer of stock[REF] that "made his fortune."[REF]