Concept stub
Sketchpad & the Light Pen
Human–Computer Interaction
Sutherland's 1963 program, the ancestor of all interactive graphics.
Sketchpad & the Light Pen — Sutherland's 1963 program, the ancestor of all interactive graphics.
This entry is a stub. It will be written out in full when a Chromix article calls for it. What belongs here: what Sketchpad & the Light Pen actually did, why it mattered at the time, and what it made possible afterwards — each claim carrying its own source.
This entry is a stub. Most First Principles entries begin short and deepen only when a new article calls for it — the encyclopedia grows as Chromix writes.