<s>
TclX	B-Language
,	O
an	O
abbreviation	O
for	O
extended	O
Tcl	B-Operating_System
,	O
was	O
one	O
of	O
the	O
first	O
freely	O
available	O
Tcl	B-Operating_System
extensions	O
to	O
the	O
Tcl	B-Operating_System
programming	I-Operating_System
language	I-Operating_System
,	O
providing	O
new	O
operating	B-General_Concept
system	I-General_Concept
interface	O
commands	O
,	O
extended	O
file	O
controls	O
,	O
time	O
and	O
date	O
manipulation	O
,	O
scanning	O
and	O
status	O
commands	O
and	O
many	O
others	O
.	O
</s>
<s>
While	O
many	O
features	O
of	O
TclX	B-Language
have	O
been	O
incorporated	O
into	O
Tcl	B-Operating_System
,	O
TclX	B-Language
continued	O
to	O
be	O
updated	O
,	O
providing	O
Tcl	B-Operating_System
interfaces	O
to	O
many	O
Unix/Linux	O
system	B-Operating_System
calls	I-Operating_System
and	O
library	B-Library
routines	I-Library
,	O
expanded	O
list	O
functions	O
,	O
and	O
so	O
forth	O
.	O
</s>
<s>
TclX	B-Language
is	O
shipped	O
by	O
Debian	O
and	O
as	O
part	O
of	O
Mac	B-Operating_System
OS	I-Operating_System
X	I-Operating_System
.	O
</s>
<s>
It	O
is	O
also	O
available	O
as	O
an	O
RPM	B-Application
for	O
Red	O
Hat	O
Enterprise	O
Linux	B-Application
,	O
Fedora	O
,	O
openSUSE	B-Operating_System
,	O
and	O
the	O
Mandriva	O
versions	O
of	O
Linux	B-Application
,	O
and	O
as	O
a	O
port	B-Application
for	O
FreeBSD	B-Operating_System
,	O
among	O
others	O
.	O
</s>
<s>
TclX	B-Language
was	O
developed	O
by	O
Karl	O
Lehenbauer	O
and	O
Mark	O
Diekhans	O
.	O
</s>
