<s>
SCRIPT	O
,	O
any	O
of	O
a	O
series	O
of	O
text	O
markup	O
languages	O
starting	O
with	O
Script	O
under	O
Control	B-Application
Program-67/Cambridge	I-Application
Monitor	I-Application
System	I-Application
(	O
CP-67/CMS	B-Application
)	O
and	O
Script/370	O
under	O
Virtual	B-Application
Machine	I-Application
Facility/370	I-Application
(	O
VM/370	B-Application
)	O
and	O
the	O
Time	B-Application
Sharing	I-Application
Option	I-Application
(	O
TSO	O
)	O
of	O
OS/VS2	B-Application
;	O
the	O
current	O
version	O
,	O
SCRIPT/VS	B-Application
,	O
is	O
part	O
of	O
IBM	O
's	O
Document	B-Application
Composition	I-Application
Facility	I-Application
(	O
DCF	O
)	O
for	O
IBM	O
z/VM	B-Application
and	O
z/OS	B-Application
systems	O
.	O
</s>
<s>
SCRIPT	O
was	O
developed	O
for	O
CP-67/CMS	B-Application
by	O
Stuart	O
Madnick	O
at	O
MIT	O
,	O
succeeding	O
CTSS	B-Protocol
RUNOFF	I-Protocol
.	O
</s>
<s>
In	O
1968	O
"	O
IBM	O
contracted	O
Stuart	O
Madnick	O
of	O
MIT	O
to	O
write	O
a	O
simple	O
document	O
preparation	O
...	O
"	O
to	O
run	O
on	O
CP/67	B-Application
.	O
</s>
<s>
He	O
modeled	O
it	O
on	O
MIT	O
's	O
CTSS	B-Protocol
RUNOFF	I-Protocol
.	O
</s>
<s>
In	O
1974	O
,	O
William	O
Dwyer	O
at	O
Yale	O
University	O
ported	O
the	O
CP-67	O
version	O
of	O
Script	O
to	O
the	O
Time	B-Application
Sharing	I-Application
Option	I-Application
(	O
TSO	O
)	O
of	O
OS/360	B-Application
under	O
the	O
name	O
NSCRIPT	O
.	O
</s>
<s>
By	O
1978	O
,	O
IBM	O
's	O
Script/370	O
,	O
running	O
on	O
VM/CMS	B-Application
,	O
had	O
evolved	O
into	O
Document	B-Application
Composition	I-Application
Facility	I-Application
(	O
DCF	O
)	O
,	O
supporting	O
SCRIPT/VS	B-Application
on	O
CMS	O
,	O
DOS/VS	B-Application
,	O
OS/VS1	B-Application
and	O
OS/VS2	B-Application
,	O
and	O
supported	O
the	O
IBM	O
3800	O
.	O
</s>
<s>
In	O
addition	O
,	O
there	O
was	O
a	O
PC/MS	O
-DOS	O
version	O
called	O
SCRIPT/PC	O
.	O
</s>
<s>
SCRIPT	O
allows	O
space	O
units	O
in	O
control	O
words	O
to	O
be	O
specified	O
in	O
a	O
number	O
of	O
units	O
including	O
inches	O
,	O
centimeters	O
,	O
millimeters	O
,	O
picas	O
,	O
ciceros	O
,	O
m-spaces	O
,	O
or	O
device	O
units	O
(	O
pels	B-Algorithm
at	O
the	O
current	O
device	O
resolution	O
)	O
.	O
</s>
<s>
Several	O
packages	O
for	O
semantic	O
tagging	O
,	O
including	O
GML	B-Application
and	O
EasyScript	O
,	O
are	O
built	O
on	O
top	O
of	O
this	O
facility	O
.	O
</s>
<s>
IBM	O
's	O
Generalized	B-Application
Markup	I-Application
Language	I-Application
(	O
GML	B-Application
)	O
is	O
a	O
descriptive	O
markup	O
layer	O
describing	O
the	O
logical	O
structure	O
of	O
a	O
document	O
.	O
</s>
<s>
Both	O
SCRIPT/VS	B-Application
and	O
the	O
GML	B-Application
Starter	O
Set	O
are	O
part	O
of	O
IBM	O
's	O
Document	B-Application
Composition	I-Application
Facility	I-Application
(	O
DCF	O
)	O
,	O
used	O
in	O
the	O
System/370	B-Device
platform	O
and	O
successors	O
.	O
</s>
<s>
The	O
tag	O
sets	O
of	O
the	O
BookMaster	O
and	O
BookManager	O
BUILD/MVS	O
products	O
are	O
built	O
on	O
a	O
foundation	O
of	O
the	O
GML	B-Application
Starter	O
Set	O
syntax	O
and	O
implementation	O
.	O
</s>
<s>
The	O
Standard	B-Language
Generalized	I-Language
Markup	I-Language
Language	I-Language
(	O
SGML	B-Language
)	O
is	O
a	O
descendant	O
of	O
GML	B-Application
.	O
</s>
<s>
While	O
DCF	O
does	O
not	O
directly	O
handle	O
SGML	B-Language
,	O
there	O
is	O
an	O
SGML	B-Language
translator	O
available	O
as	O
a	O
separate	O
product	O
.	O
</s>
<s>
EasyScript	O
is	O
a	O
set	O
of	O
macro	O
definitions	O
and	O
profiles	O
included	O
with	O
Script/370	O
Version	O
3	O
that	O
implements	O
a	O
primitive	O
version	O
of	O
GML	B-Application
.	O
</s>
<s>
The	O
GML	B-Application
Starter	O
Set	O
(	O
GMLSS	O
)	O
is	O
a	O
set	O
of	O
macro	O
definitions	O
and	O
profiles	O
that	O
implements	O
a	O
set	O
of	O
tags	O
that	O
has	O
more	O
of	O
a	O
semantic	O
orientation	O
than	O
the	O
raw	O
Script/VS	B-Application
control	O
words	O
.	O
</s>
<s>
Bookmaster	O
is	O
an	O
IBM	O
product	O
,	O
"	O
designed	O
for	O
high-volume	O
in-house	O
publishing	O
applications	O
"	O
,	O
that	O
extends	O
the	O
GML	B-Application
Starter	O
Set	O
of	O
DCF	O
.	O
</s>
<s>
It	O
consists	O
of	O
"	O
a	O
rich	O
set	O
of	O
GML	B-Application
vocabulary	O
for	O
creating	O
complex	O
document	O
layouts.	O
"	O
</s>
<s>
Bookmaster	O
runs	O
under	O
the	O
z/VM	B-Application
and	O
z/OS	B-Application
operating	O
systems	O
.	O
</s>
<s>
BookManager	O
BUILD/MVS	O
and	O
BookManager	O
BUILD/VM	O
are	O
layered	O
on	O
top	O
of	O
SCRIPT	O
and	O
BookMaster	O
and	O
can	O
run	O
on	O
z/VM	B-Application
and	O
z/OS	B-Application
.	O
</s>
<s>
Other	O
BookManager	O
BUILD	O
products	O
for	O
generating	O
text	O
run	O
on	O
Linux	B-Application
,	O
Windows	B-Application
or	O
OS/2	B-Application
and	O
convert	O
files	O
produced	O
by	O
various	O
word	O
processors	O
to	O
BookManager	O
format	O
.	O
</s>
<s>
BookManager	O
electronic	O
documents	O
typically	O
have	O
filenames	B-Device
ending	O
with	O
the	O
extension	O
.BOO	O
.	O
</s>
