<s>
In	O
Conway	O
's	O
Game	O
of	O
Life	O
and	O
related	O
cellular	O
automata	O
,	O
a	O
spacefiller	B-General_Concept
is	O
a	O
pattern	O
that	O
spreads	O
out	O
indefinitely	O
,	O
eventually	O
filling	O
the	O
entire	O
space	O
with	O
a	O
still	O
life	O
pattern	O
.	O
</s>
<s>
With	O
a	O
spacefiller	B-General_Concept
,	O
unlike	O
a	O
breeder	O
,	O
every	O
point	O
in	O
the	O
space	O
eventually	O
becomes	O
part	O
of	O
the	O
space-filling	O
still	O
life	O
pattern	O
.	O
</s>
