<s>
Internet	B-Operating_System
Config	I-Operating_System
was	O
an	O
Internet	O
preferences	O
manager	O
and	O
API	B-General_Concept
for	O
Mac	B-Application
OS	I-Application
Classic	I-Application
.	O
</s>
<s>
Internet	B-Operating_System
Config	I-Operating_System
's	O
purpose	O
was	O
to	O
consolidate	O
what	O
was	O
,	O
at	O
the	O
time	O
,	O
an	O
unwieldy	O
number	O
of	O
options	O
and	O
settings	O
related	O
to	O
Internet	O
use	O
that	O
had	O
not	O
yet	O
been	O
integrated	O
into	O
the	O
operating	O
system	O
's	O
own	O
control	O
panel	O
.	O
</s>
<s>
Some	O
settings	O
were	O
for	O
a	O
systemwide	O
default	O
web	B-Application
browser	I-Application
,	O
home	O
page	O
,	O
default	O
FTP	B-Protocol
client	I-Protocol
,	O
systemwide	O
default	O
download	O
folder	O
,	O
and	O
email	O
settings	O
.	O
</s>
<s>
Internet	B-Operating_System
Config	I-Operating_System
represented	O
an	O
important	O
ease	O
of	O
use	O
advantage	O
for	O
the	O
Macintosh	O
platform	O
on	O
the	O
early	O
Internet	O
.	O
</s>
<s>
The	O
software	O
consisted	O
of	O
two	O
pieces	O
,	O
the	O
Internet	B-Operating_System
Config	I-Operating_System
control	O
panel	O
which	O
was	O
actually	O
just	O
a	O
normal	O
application	O
and	O
an	O
'	O
appe	O
 '	O
extension	O
that	O
launched	O
at	O
boot	O
time	O
but	O
did	O
not	O
patch	O
any	O
system	O
traps	B-Application
.	O
</s>
<s>
Internet	B-Operating_System
Config	I-Operating_System
enabled	O
the	O
ability	O
for	O
applications	O
to	O
support	O
command-clicking	O
of	O
URLs	O
displayed	O
anywhere	O
onscreen	O
and	O
have	O
the	O
URLs	O
sent	O
to	O
the	O
user	O
selected	O
application	O
.	O
</s>
<s>
For	O
example	O
,	O
http:	O
URLs	O
would	O
be	O
sent	O
to	O
the	O
selected	O
web	B-Application
browser	I-Application
,	O
ftp	B-Protocol
:	O
URLs	O
to	O
the	O
selected	O
FTP	B-Protocol
client	I-Protocol
,	O
mailto	O
:	O
URLs	O
to	O
the	O
selected	O
Email	O
application	O
,	O
and	O
so	O
on	O
.	O
</s>
<s>
This	O
functionality	O
was	O
made	O
optional	O
systemwide	O
,	O
as	O
it	O
did	O
have	O
to	O
patch	O
one	O
trap	B-Application
,	O
_TEClick	O
.	O
</s>
<s>
Internet	B-Operating_System
Config	I-Operating_System
also	O
provided	O
functionality	O
to	O
ease	O
interoperability	O
of	O
the	O
Macintosh	O
type	B-Operating_System
and	I-Operating_System
creator	I-Operating_System
code	I-Operating_System
system	O
with	O
the	O
file	O
extensions	O
used	O
on	O
the	O
Internet	O
and	O
on	O
other	O
operating	O
systems	O
.	O
</s>
<s>
API	B-General_Concept
functions	O
were	O
provided	O
to	O
map	O
file	O
extensions	O
to	O
Mac	O
type/creator	O
information	O
,	O
and	O
vice	O
versa	O
.	O
</s>
<s>
The	O
public	O
domain	O
licensing	O
of	O
the	O
project	O
and	O
the	O
tight	O
Macintosh	O
Internet	O
community	O
in	O
the	O
late	O
1990s	O
led	O
to	O
the	O
rapid	O
adoption	O
of	O
the	O
facility	O
,	O
and	O
then	O
to	O
Apple	O
bundling	O
it	O
as	O
part	O
of	O
Mac	B-Application
OS	I-Application
.	O
</s>
<s>
The	O
Internet	B-Operating_System
Config	I-Operating_System
calls	O
ended	O
up	O
being	O
part	O
of	O
Carbon	O
and	O
Mac	B-Application
OS	I-Application
X	O
,	O
with	O
the	O
header	O
and	O
library	O
files	O
now	O
part	O
of	O
Universal	O
Interfaces	O
and	O
Headers	O
.	O
</s>
