<s>
PC-Talk	B-Protocol
is	O
a	O
communications	O
software	O
program	O
.	O
</s>
<s>
It	O
was	O
one	O
of	O
the	O
first	O
three	O
widely	O
popular	O
software	O
products	O
sold	O
via	O
the	O
marketing	O
method	O
that	O
became	O
known	O
as	O
shareware	B-License
.	O
</s>
<s>
It	O
was	O
written	O
by	O
Andrew	O
Fluegelman	O
in	O
late	O
1982	O
,	O
and	O
helped	O
created	O
shareware	B-License
's	O
sales	O
and	O
marketing	O
methodology	O
.	O
</s>
<s>
Fluegelman	O
distributed	O
PC-Talk	B-Protocol
by	O
sending	O
a	O
copy	O
to	O
anyone	O
who	O
sent	O
him	O
a	O
formatted	O
floppy	O
disk	O
.	O
</s>
<s>
Though	O
PC-Talk	B-Protocol
is	O
regarded	O
as	O
a	O
progenitor	O
of	O
the	O
shareware	B-License
distribution	O
model	O
,	O
it	O
was	O
labeled	O
at	O
the	O
time	O
both	O
freeware	B-License
and	O
"	O
user-supported	O
software	O
"	O
,	O
and	O
included	O
elements	O
of	O
open-source	B-Application
software	I-Application
(	O
but	O
not	O
free	B-Application
software	I-Application
)	O
.	O
</s>
<s>
PC-Talk	B-Protocol
III	O
was	O
sold	O
for	O
$35	O
instead	O
of	O
being	O
distributed	O
for	O
free	O
;	O
The	O
Headlands	O
Press	O
offered	O
a	O
$25	O
discount	O
to	O
those	O
who	O
had	O
previously	O
donated	O
.	O
</s>
<s>
The	O
CompuServe	O
IBM/PC	O
SIG	O
forum	O
developed	O
"	O
PC-TALK	B-Protocol
III	O
Version	O
B	O
,	O
Level	O
850311	O
"	O
.	O
</s>
<s>
Both	O
the	O
user-modified	O
version	O
of	O
the	O
program	O
and	O
the	O
CompuServe	O
distribution	O
point	O
were	O
officially	O
sanctioned	O
by	O
Fluegelman	O
and	O
The	O
Headlands	O
Press	O
,	O
holders	O
of	O
the	O
copyright	O
for	O
PC-TALK	B-Protocol
.	O
</s>
<s>
Members	O
of	O
HAL-PC	O
also	O
produced	O
custom	O
versions	O
that	O
supported	O
videotex	B-Operating_System
and	O
IBM	B-Device
3101	I-Device
emulation	B-Application
.	O
</s>
<s>
PC	O
Magazine	O
said	O
that	O
PC-Talk	B-Protocol
"	O
is	O
elegantly	O
written	O
and	O
performs	O
beautifully	O
.	O
</s>
