<s>
NavCIS	B-Protocol
was	O
CompuServe	O
Information	O
Service	O
's	O
client	B-Protocol
program	I-Protocol
for	O
automated	O
connections	O
to	O
the	O
CompuServe	O
Information	O
Service	O
,	O
at	O
a	O
time	O
when	O
online	O
use	O
was	O
priced	O
per	O
minute	O
.	O
</s>
<s>
It	O
was	O
largely	O
an	O
offline	B-Protocol
reader	I-Protocol
,	O
downloading	O
both	O
email	O
and	O
new	O
messages	O
from	O
selected	O
forums	B-Application
,	O
and	O
then	O
disconnecting	O
.	O
</s>
<s>
Unlike	O
most	O
offline	B-Protocol
readers	I-Protocol
,	O
NavCIS	B-Protocol
also	O
allowed	O
the	O
user	O
to	O
select	O
files	O
for	O
upload	O
and	O
download	O
,	O
and	O
included	O
a	O
system	O
for	O
scripting	O
the	O
session	O
.	O
</s>
<s>
Originally	O
called	O
ForCIS	B-Protocol
,	O
it	O
was	O
based	O
on	O
the	O
host	O
computer	O
's	O
interface	O
.	O
</s>
<s>
NavCIS	B-Protocol
was	O
the	O
first	O
email	O
or	O
forum	O
client	O
to	O
feature	O
WYSIWYG	B-Application
in	O
the	O
early	O
1990s	O
.	O
</s>
<s>
It	O
was	O
available	O
as	O
a	O
GUI	B-Application
on	O
both	O
MS-DOS	B-Application
and	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
The	O
very	O
similar	O
CompuServe	B-Protocol
Navigator	I-Protocol
was	O
a	O
similar	O
system	O
for	O
the	O
Macintosh	B-Device
.	O
</s>
<s>
Support	O
for	O
NavCIS	B-Protocol
lagged	O
the	O
interactive	O
CompuServe	B-Application
Information	I-Application
Manager	I-Application
(	O
CIM	O
)	O
,	O
which	O
kept	O
users	O
online	O
but	O
allowed	O
GUI	B-Application
access	O
to	O
most	O
of	O
CompuServe	O
's	O
more	O
popular	O
features	O
like	O
chat	O
and	O
(	O
some	O
)	O
online	O
games	O
.	O
</s>
<s>
NavCIS	B-Protocol
stopped	O
working	O
when	O
the	O
original	O
CompuServe	O
interface	O
was	O
shut	O
down	O
around	O
2001	O
.	O
</s>
<s>
The	O
NavCIS	B-Protocol
system	O
was	O
based	O
around	O
its	O
session	O
files	O
,	O
which	O
described	O
the	O
actions	O
to	O
be	O
carried	O
out	O
during	O
a	O
single	O
connection	O
.	O
</s>
<s>
In	O
contrast	O
to	O
systems	O
used	O
with	O
bulletin	B-Application
board	I-Application
systems	I-Application
,	O
NavCIS	B-Protocol
provided	O
access	O
to	O
much	O
of	O
the	O
CIS	O
environment	O
.	O
</s>
<s>
There	O
were	O
commands	O
to	O
update	O
the	O
forums	B-Application
list	O
,	O
for	O
instance	O
,	O
so	O
the	O
list	O
of	O
available	O
message	O
areas	O
in	O
the	O
client	O
was	O
always	O
up	O
to	O
date	O
.	O
</s>
