<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
an	O
operator	O
or	O
function	O
is	O
variadic	B-General_Concept
if	O
it	O
can	O
take	O
a	O
varying	O
number	O
of	O
arguments	O
;	O
that	O
is	O
,	O
if	O
its	O
arity	O
is	O
not	O
fixed	O
.	O
</s>
