<s>
ViewSheet	B-Language
is	O
a	O
spreadsheet	B-Application
program	I-Application
produced	O
in	O
the	O
1980s	O
by	O
Acornsoft	O
for	O
use	O
with	O
the	O
BBC	B-Device
Micro	I-Device
and	O
Acorn	B-Device
Electron	I-Device
microcomputers	O
.	O
</s>
<s>
It	O
was	O
distributed	O
as	O
a	O
pre-installed	O
ROM	B-Device
with	O
some	O
computer	O
models	O
,	O
such	O
as	O
the	O
Master	B-Device
.	O
</s>
<s>
ViewSheet	B-Language
was	O
written	O
by	O
Mark	O
Colton	O
.	O
</s>
<s>
ViewSheet	B-Language
supports	O
spreadsheets	B-Application
of	O
up	O
to	O
255	O
by	O
255	O
cells	O
in	O
size	O
.	O
</s>
<s>
The	O
program	O
is	O
supplied	O
with	O
a	O
keyboard	O
card	O
listing	O
the	O
various	O
commands	O
,	O
which	O
on	O
the	O
BBC	B-Device
Micro	I-Device
is	O
placed	O
under	O
the	O
clear	O
plastic	O
strip	O
above	O
the	O
function	O
keys	O
.	O
</s>
<s>
The	O
spreadsheet	B-Application
is	O
entered	O
by	O
typing	O
*	O
SHEET	O
.	O
</s>
<s>
All	O
BBC	B-Device
Micro	I-Device
screen	O
modes	O
are	O
supported	O
,	O
and	O
the	O
background	O
and	O
foreground	O
colours	O
can	O
be	O
changed	O
by	O
use	O
of	O
Ctrl-S	O
,	O
n	O
,	O
n	O
,	O
0	O
,	O
0	O
,	O
0	O
key	O
sequences	O
.	O
</s>
<s>
The	O
program	O
supports	O
user-defined	O
windows	O
that	O
can	O
display	O
cells	O
from	O
various	O
different	O
parts	O
of	O
the	O
spreadsheet	B-Application
within	O
the	O
same	O
screen	O
.	O
</s>
<s>
This	O
is	O
useful	O
in	O
lieu	O
of	O
a	O
WIMP	B-Application
environment	O
,	O
as	O
it	O
saves	O
the	O
user	O
the	O
inconvenience	O
of	O
moving	O
back	O
and	O
forth	O
around	O
the	O
spreadsheet	B-Application
to	O
view	O
cells	O
which	O
are	O
far	O
apart	O
from	O
each	O
other	O
.	O
</s>
<s>
ViewSheet	B-Language
supports	O
saving	O
of	O
spreadsheets	B-Application
to	O
both	O
disk	O
and	O
tape	O
and	O
printing	O
to	O
both	O
serial	O
and	O
parallel	O
printers	O
.	O
</s>
<s>
The	O
program	O
also	O
integrates	O
with	O
Acornsoft	O
's	O
View	O
word	O
processor	O
,	O
allowing	O
mixing	O
of	O
spreadsheet	B-Application
data	O
and	O
word	O
processor	O
text	O
within	O
the	O
same	O
printout	O
.	O
</s>
<s>
The	O
ViewSheet	B-Language
file	O
format	O
is	O
documented	O
on	O
page	O
128	O
of	O
the	O
supplied	O
user	O
guide	O
,	O
which	O
also	O
contains	O
an	O
example	O
BBC	B-Language
BASIC	I-Language
program	O
to	O
print	O
out	O
values	O
from	O
a	O
saved	O
spreadsheet	B-Application
.	O
</s>
<s>
ViewSheet	B-Language
takes	O
advantage	O
of	O
a	O
second	O
6502	O
processor	O
,	O
which	O
triples	O
the	O
amount	O
of	O
memory	O
available	O
for	O
spreadsheets	B-Application
,	O
assuming	O
the	O
default	O
screen	O
mode	O
is	O
used	O
(	O
mode	O
3	O
)	O
.	O
</s>
<s>
and	O
a	O
book	O
ViewSheet	B-Language
and	O
Viewstore	O
:	O
A	O
Dabhand	O
Guide	O
by	O
Graham	O
Bell	O
was	O
published	O
by	O
Dabs	O
Press	O
in	O
1989	O
.	O
</s>
<s>
David	O
Brown	O
,	O
in	O
his	O
review	O
for	O
The	O
Micro	O
User	O
states	O
that	O
ViewSheet	B-Language
"	O
succeeds	O
in	O
providing	O
all	O
the	O
basic	O
spreadsheet	B-Application
functions	O
in	O
a	O
well	O
presented	O
package	O
"	O
.	O
</s>
<s>
Although	O
,	O
he	O
also	O
cites	O
several	O
shortcomings	O
of	O
the	O
program	O
,	O
writing	O
"	O
In	O
conclusion	O
,	O
Viewsheet	B-Language
's	O
major	O
failing	O
is	O
to	O
provide	O
adequate	O
facilities	O
for	O
textual	O
labelling.	O
"	O
</s>
