<s>
The	O
Writer	B-Device
's	I-Device
Workbench	I-Device
(	O
wwb	O
)	O
is	O
a	O
grammar	B-Application
checker	I-Application
created	O
by	O
Lorinda	O
Cherry	O
and	O
Nina	O
Macdonald	O
of	O
Bell	O
Labs	O
.	O
</s>
<s>
It	O
is	O
perhaps	O
the	O
earliest	O
grammar	B-Application
checker	I-Application
to	O
receive	O
wide	O
usage	O
on	O
Unix	B-Application
systems	I-Application
.	O
</s>
<s>
The	O
Writer	B-Device
's	I-Device
Workbench	I-Device
was	O
meant	O
to	O
help	O
students	O
learn	O
to	O
edit	O
their	O
work	O
:	O
</s>
<s>
continrls	O
Presents	O
information	O
about	O
how	O
contingencies	O
can	O
be	O
displayed	O
as	O
if-then	O
lists	O
or	O
decision	B-Algorithm
trees	I-Algorithm
.	O
</s>
<s>
reroff	O
Converts	O
formatted	O
text	O
into	O
nroff	B-Device
format	O
.	O
</s>
<s>
spellwbb	O
Enhanced	O
version	O
of	O
the	O
spell	B-Application
command	O
that	O
can	O
process	O
multiple	O
files	O
.	O
</s>
<s>
wwbaid	O
Online	O
help	O
system	O
for	O
the	O
Writer	B-Device
's	I-Device
Workbench	I-Device
.	O
</s>
<s>
wwbhelp	O
Searches	O
for	O
help	O
on	O
a	O
particular	O
Writer	B-Device
's	I-Device
Workbench	I-Device
topic	O
.	O
</s>
<s>
wwbinfo	O
Displays	O
a	O
complete	O
summary	O
of	O
the	O
Writer	B-Device
's	I-Device
Workbench	I-Device
suite	O
.	O
</s>
<s>
The	O
wwb	O
package	O
was	O
included	O
with	O
AT&T	B-Operating_System
UNIX	I-Operating_System
in	O
the	O
late	O
1970s	O
and	O
early	O
1980s	O
and	O
received	O
wide	O
distribution	O
as	O
a	O
result	O
.	O
</s>
<s>
However	O
,	O
wwb	O
was	O
not	O
included	O
with	O
Version	B-Operating_System
7	I-Operating_System
Unix	I-Operating_System
,	O
and	O
gradually	O
became	O
abandonware	O
.	O
</s>
<s>
Various	O
successors	O
arose	O
,	O
based	O
closely	O
upon	O
wwb	O
,	O
such	O
as	O
the	O
commercial	O
Grammatik	B-Application
packages	O
for	O
IBM	B-Device
PCs	I-Device
.	O
</s>
<s>
The	B-Operating_System
GNU	I-Operating_System
operating	I-Operating_System
system	I-Operating_System
contains	O
free	B-Application
software	I-Application
implementations	O
of	O
several	O
wwb	O
utilities	O
,	O
such	O
as	O
spell	B-Application
,	O
style	O
and	O
diction	O
.	O
</s>
<s>
As	O
of	O
early	O
2019	O
,	O
the	O
look	O
utility	O
had	O
not	O
yet	O
been	O
ported	O
to	O
GNU	B-Operating_System
,	O
but	O
its	O
implementation	O
from	O
4.4BSD-Lite	O
is	O
available	O
as	O
free	B-Application
software	I-Application
,	O
for	O
example	O
via	O
Debian	O
.	O
</s>
