<s>
In	O
the	O
context	O
of	O
data	B-Application
visualization	I-Application
,	O
a	O
glyph	B-Application
is	O
any	O
marker	O
,	O
such	O
as	O
an	O
arrow	O
or	O
similar	O
marking	O
,	O
used	O
to	O
specify	O
part	O
of	O
a	O
visualization	B-Application
.	O
</s>
<s>
These	O
visual	O
objects	O
are	O
collectively	O
called	O
a	O
glyph	B-Application
.	O
</s>
<s>
Glyph	B-Application
construction	O
can	O
be	O
a	O
complex	O
process	O
when	O
there	O
are	O
many	O
dimensions	O
to	O
be	O
represented	O
in	O
the	O
visualization	B-Application
.	O
</s>
<s>
Maguire	O
et	O
al	O
proposed	O
a	O
taxonomy	O
based	O
approach	O
to	O
glyph-design	O
that	O
uses	O
a	O
tree	O
to	O
guide	O
the	O
visual	O
encodings	O
used	O
to	O
representation	O
various	O
data	O
items	O
.	O
</s>
<s>
Duffy	O
et	O
al	O
created	O
perhaps	O
one	O
of	O
the	O
most	O
complex	O
glyph	B-Application
representations	O
with	O
their	O
representation	O
of	O
sperm	O
movement	O
.	O
</s>
