<s>
Interpress	B-Language
is	O
a	O
page	O
description	O
language	O
developed	O
at	O
Xerox	O
PARC	O
,	O
based	O
on	O
the	O
Forth	B-Application
programming	I-Application
language	I-Application
and	O
an	O
earlier	O
graphics	O
language	O
called	O
JaM	O
.	O
</s>
<s>
PARC	O
was	O
unable	O
to	O
commercialize	O
Interpress	B-Language
.	O
</s>
<s>
Two	O
of	O
its	O
creators	O
,	O
Chuck	O
Geschke	O
and	O
John	O
Warnock	O
,	O
left	O
Xerox	O
,	O
formed	O
Adobe	O
Systems	O
,	O
and	O
produced	O
a	O
similar	O
language	O
called	O
PostScript	B-Language
.	O
</s>
<s>
Interpress	B-Language
is	O
used	O
in	O
some	O
Xerox	O
printers	O
most	O
notable	O
was	O
the	O
DocuTech	O
Network	O
Production	O
Publisher	O
,	O
and	O
is	O
supported	O
in	O
Xerox	B-Application
Ventura	I-Application
Publisher	I-Application
.	O
</s>
<s>
Interpress	B-Language
is	O
also	O
used	O
as	O
the	O
output	O
format	O
for	O
PARC	O
's	O
InterScript	B-Language
system	O
,	O
which	O
is	O
an	O
editable	O
word	B-General_Concept
processor	I-General_Concept
format	O
for	O
rich	O
text	O
documents	O
.	O
</s>
<s>
Interpress	B-Language
describes	O
the	O
desired	O
or	O
ideal	O
appearance	O
of	O
a	O
document	O
that	O
has	O
been	O
completely	O
composed	O
by	O
some	O
other	O
process	O
(	O
emitter	O
)	O
.	O
</s>
<s>
Since	O
Interpress	B-Language
describes	O
a	O
document	O
in	O
a	O
device-independent	O
manner	O
,	O
a	O
master	O
can	O
be	O
printed	O
on	O
a	O
variety	O
of	O
devices	O
,	O
each	O
of	O
which	O
renders	O
its	O
best	O
approximation	O
to	O
the	O
ideal	O
represented	O
by	O
the	O
master	O
.	O
</s>
<s>
Recognizing	O
this	O
and	O
also	O
the	O
potential	O
for	O
chaos	O
if	O
every	O
printer	O
were	O
to	O
implement	O
a	O
different	O
portion	O
of	O
the	O
language	O
,	O
Interpress	B-Language
was	O
designed	O
to	O
have	O
defined	O
three	O
standard	O
function	O
sets	O
:	O
</s>
