Doug Engelbart and his team at SRI developed NLS in the sixties. This was where the mouse, 2-dimensional display editing (using a screen/monitor with a computer), in-file object addressing, linking & hypermedia (Hypertext, but not by that name), outline processing, flexible view control, windows, integrated hypermedia email, hypermedia publishing, document version control, teleconferencing, computer-aided meetings, context-sensitive help, distributed client-server architecture, uniform command syntax, universal "user interface" front-end module, multi-tool integration (use any tool on any document, not simplistic document-application system which is prevalent today) and grammar-driven command language interpreter first saw the light of day. I