1. Sketchpad: Free online drAwing application for all ages

2. 28 The design came from the sketchpad of a 12 year old Milton Keynes schoolboy.

3. For example, the graphical user interface (GUI) was derived from the Sketchpad as well as modern object oriented programming.

4. 30 Sketchpad was not only the first drawing program, but was arguably the best, absurdly ahead of its time.