<s>
ZOG	B-Application
was	O
an	O
early	O
hypertext	O
system	O
developed	O
at	O
Carnegie	O
Mellon	O
University	O
during	O
the	O
1970s	O
by	O
Donald	O
McCracken	O
and	O
Robert	O
Akscyn	O
.	O
</s>
<s>
ZOG	B-Application
was	O
first	O
developed	O
by	O
Allen	O
Newell	O
and	O
George	O
G	O
.	O
Robertson	O
to	O
serve	O
as	O
the	O
front	O
end	O
for	O
AI	B-Application
and	O
Cognitive	O
Science	O
programs	O
brought	O
together	O
at	O
CMU	O
for	O
a	O
summer	O
workshop	O
.	O
</s>
<s>
The	O
ZOG	B-Application
project	O
was	O
as	O
an	O
outgrowth	O
of	O
long-term	O
artificial	B-Application
intelligence	I-Application
research	I-Application
led	O
by	O
Allen	O
Newell	O
and	O
funded	O
by	O
the	O
Office	O
of	O
Naval	O
Research	O
.	O
</s>
<s>
A	O
second	O
version	O
of	O
ZOG	B-Application
was	O
installed	O
as	O
the	O
key	O
interface	O
between	O
users	O
and	O
logistics	O
on	O
the	O
Nimitz	O
class	O
carrier	O
USS	O
Carl	O
Vinson	O
in	O
1983	O
.	O
</s>
<s>
ZOG	B-Application
consisted	O
of	O
"	O
frames	O
"	O
that	O
contained	O
a	O
title	O
,	O
a	O
description	O
,	O
a	O
line	O
containing	O
ZOG	B-Application
system	O
commands	O
,	O
and	O
selections	O
(	O
menu	O
items	O
)	O
that	O
led	O
to	O
other	O
frames	O
.	O
</s>
<s>
ZOG	B-Application
pioneered	O
the	O
"	O
frame	O
"	O
or	O
"	O
card	O
"	O
model	O
of	O
hypertext	O
later	O
popularized	O
by	O
HyperCard	B-Application
.	O
</s>
<s>
The	O
ZOG	B-Application
database	O
became	O
fully	O
functional	O
around	O
1977	O
.	O
</s>
<s>
Beginning	O
in	O
1980	O
,	O
ZOG	B-Application
was	O
ported	O
from	O
DEC	B-Device
VAX	I-Device
version	O
(	O
written	O
in	O
an	O
experimental	O
language	O
called	O
"	O
L*	O
"	O
)	O
to	O
the	O
Pascal-based	O
Three	B-Device
Rivers	I-Device
PERQ	I-Device
workstation	B-Device
and	O
was	O
used	O
for	O
a	O
shipwide	O
local	B-General_Concept
area	I-General_Concept
network	I-General_Concept
on	O
the	O
American	O
aircraft	O
carrier	O
USS	O
Carl	O
Vinson	O
.	O
</s>
<s>
In	O
1981	O
,	O
Rob	O
Akscyn	O
and	O
Donald	O
McCracken	O
,	O
two	O
principals	O
from	O
the	O
ZOG	B-Application
project	O
,	O
founded	O
Knowledge	O
Systems	O
to	O
develop	O
and	O
market	O
a	O
commercial	O
follow-on	O
to	O
ZOG	B-Application
called	O
KMS	O
(	O
"	O
Knowledge	O
Management	O
System	O
"	O
)	O
.	O
</s>
<s>
An	O
example	O
of	O
syntax	O
from	O
one	O
dialect	O
of	O
ZOG	B-Application
:	O
</s>
