<s>
An	O
anaphoric	B-Language
macro	I-Language
is	O
a	O
type	O
of	O
programming	O
macro	O
that	O
deliberately	O
captures	O
some	O
form	O
supplied	O
to	O
the	O
macro	O
which	O
may	O
be	O
referred	O
to	O
by	O
an	O
anaphor	O
(	O
an	O
expression	O
referring	O
to	O
another	O
)	O
.	O
</s>
<s>
Anaphoric	B-Language
macros	I-Language
first	O
appeared	O
in	O
Paul	O
Graham	O
's	O
On	O
Lisp	O
and	O
their	O
name	O
is	O
a	O
reference	O
to	O
linguistic	O
anaphora	O
—	O
the	O
use	O
of	O
words	O
as	O
a	O
substitute	O
for	O
preceding	O
words	O
.	O
</s>
<s>
The	O
loop	O
macro	O
in	O
ANSI	B-Language
Common	I-Language
Lisp	I-Language
is	O
anaphoric	O
in	O
binding	O
,	O
where	O
the	O
it	O
expression	O
refers	O
to	O
the	O
result	O
of	O
the	O
test	O
expression	O
in	O
a	O
clause	O
.	O
</s>
<s>
One	O
example	O
is	O
an	O
anaphoric	O
version	O
of	O
the	O
if-then-else	B-Language
construct	I-Language
,	O
which	O
introduces	O
an	O
anaphor	O
it	O
,	O
bound	O
to	O
the	O
result	O
of	O
the	O
test	O
clause	O
:	O
</s>
