Engelbart's Chord

Type this:  
Score: 0 / 0
A■□□□□
B□■□□□
C■■□□□
D□□■□□
E■□■□□
F□■■□□
G■■■□□
H□□□■□
I■□□■□
J□■□■□
K■■□■□
L□□■■□
M■□■■□
N□■■■□
O■■■■□
P□□□□■
Q■□□□■
R□■□□■
S■■□□■
T□□■□■
U■□■□■
V□■■□■
W■■■□■
X□□□■■
Y■□□■■
Z□■□■■
space■■□■■
ASDFSPACE
Learn how to type using only your left hand on five keys.



Step 1:
Put your hand
on A S D F and SPACE

Step 2: Try some chords
A+S = "C"
A+SPACE = "Q"

Step 3: Play the game.
I was inspired by Englebert's "Mother of all Demos" shown at SHDH 42 and decided to actually try out the device that was in his left hand.