<s>
XLISP	B-Language
is	O
a	O
family	O
of	O
Lisp	B-Language
implementations	O
written	O
by	O
David	O
Betz	O
and	O
first	O
released	O
in	O
1983	O
.	O
</s>
<s>
The	O
first	O
version	O
was	O
a	O
Lisp	B-Language
with	O
object-oriented	B-Language
extensions	O
for	O
computers	O
with	O
limited	O
power	O
.	O
</s>
<s>
The	O
second	O
version	O
(	O
XLISP	B-Language
2.0	O
)	O
moved	O
toward	O
Common	B-Language
Lisp	I-Language
,	O
but	O
was	O
by	O
no	O
means	O
a	O
complete	O
implementation	O
.	O
</s>
<s>
After	O
a	O
long	O
period	O
of	O
inactivity	O
,	O
the	O
author	O
released	O
a	O
new	O
version	O
based	O
on	O
XSCHEME	O
,	O
his	O
Scheme	B-Language
implementation	O
.	O
</s>
<s>
The	O
most	O
current	O
version	O
follows	O
the	O
Scheme	B-Language
R3RS	O
standard	O
.	O
</s>
<s>
AutoLISP	B-Algorithm
,	O
a	O
programming	O
and	O
scripting	O
language	O
for	O
AutoCAD	B-Algorithm
,	O
is	O
based	O
on	O
a	O
very	O
old	O
version	O
of	O
XLISP	B-Language
.	O
</s>
<s>
XLISP-PLUS	O
is	O
a	O
derivative	O
of	O
XLISP	B-Language
2.0	O
that	O
continues	O
to	O
add	O
Common	B-Language
Lisp	I-Language
features	O
.	O
</s>
<s>
Winterp	O
is	O
a	O
derivative	O
of	O
XLISP-PLUS	O
.	O
</s>
<s>
XLISP-STAT	B-Algorithm
is	O
an	O
implementation	O
of	O
Lisp-Stat	O
,	O
an	O
environment	O
for	O
dynamic	O
graphics	O
and	O
statistics	O
with	O
objects	O
.	O
</s>
<s>
Nyquist	B-Application
is	O
an	O
extension	O
of	O
XLISP	B-Language
for	O
sound	O
synthesis	O
.	O
</s>
<s>
ANIMAL	B-Application
(	O
AN	O
IMage	O
ALgebra	O
)	O
is	O
an	O
image	O
manipulation	O
environment	O
created	O
by	O
Carla	O
Maria	O
Modena	O
and	O
Roberto	O
Brunelli	O
.	O
</s>
<s>
A	O
1989	O
entry	O
to	O
the	O
IOCCC	O
identifies	O
itself	O
as	O
"	O
XLISP	B-Language
4.0	O
"	O
.	O
</s>
