<s>
SpicyNodes	B-Protocol
was	O
a	O
system	O
for	O
displaying	O
hierarchical	O
data	O
,	O
in	O
which	O
a	O
focus	B-Application
node	O
displays	O
detailed	O
information	O
,	O
and	O
the	O
surrounding	O
nodes	O
represent	O
related	O
information	O
(	O
Focus	B-General_Concept
+	I-General_Concept
Context	I-General_Concept
)	O
,	O
with	O
a	O
layout	O
based	O
on	O
radial	B-Data_Structure
maps	I-Data_Structure
.	O
</s>
<s>
SpicyNodes	B-Protocol
displays	O
a	O
central	O
node	O
,	O
orbited	O
by	O
related	O
(	O
child	O
)	O
nodes	O
.	O
</s>
<s>
As	O
the	O
user	O
navigates	O
(	O
changes	O
focus	B-Application
)	O
from	O
node	O
to	O
node	O
,	O
a	O
root	O
path	O
traces	O
the	O
path	O
back	O
to	O
the	O
home	O
node	O
.	O
</s>
<s>
Visual	O
browsing	O
–	O
Similar	O
to	O
other	O
concept	O
mapping	O
tools	O
,	O
SpicyNodes	B-Protocol
allows	O
authors	O
to	O
display	O
visual	O
thoughts	O
and	O
links	O
between	O
information	O
,	O
and	O
publish	O
an	O
information	O
map	O
for	O
users	O
to	O
browse	O
.	O
</s>
<s>
SpicyNodes	B-Protocol
is	O
a	O
radial	B-Data_Structure
tree	I-Data_Structure
layout	O
engine	O
,	O
modified	O
using	O
force-based	B-Algorithm
algorithms	I-Algorithm
,	O
bias	O
controls	O
,	O
and	O
variable	O
pivot	O
point	O
.	O
</s>
<s>
It	O
also	O
uses	O
an	O
approach	O
similar	O
to	O
hyperbolic	O
trees	O
to	O
reduce	O
sizes	O
far	O
from	O
the	O
focus	B-Application
node	O
.	O
</s>
<s>
There	O
is	O
a	O
"	O
focus	B-Application
"	O
node	O
,	O
and	O
users	O
change	O
focus	B-Application
from	O
node	O
to	O
node	O
.	O
</s>
<s>
The	O
layout	B-Algorithm
algorithm	I-Algorithm
is	O
based	O
on	O
the	O
work	O
of	O
Yee	O
and	O
his	O
associates	O
,	O
and	O
the	O
underlying	O
mechanics	O
have	O
been	O
further	O
described	O
in	O
papers	O
and	O
talks	O
at	O
conferences	O
on	O
Information	B-Application
visualization	I-Application
,	O
on	O
Museums	O
and	O
the	O
Web	O
,	O
and	O
on	O
distance	O
education	O
.	O
</s>
<s>
is	O
available	O
as	O
a	O
Software	B-Architecture
as	I-Architecture
a	I-Architecture
service	I-Architecture
,	O
built	O
on	O
Adobe	B-Operating_System
Flash	I-Operating_System
,	O
provided	O
with	O
both	O
free	O
and	O
paid	O
versions	O
by	O
the	O
original	O
development	O
team	O
at	O
IDEA.org,	O
launched	O
in	O
2009	O
.	O
</s>
<s>
It	O
has	O
an	O
open	B-Application
API	I-Application
.	O
</s>
<s>
Multitouch	B-Application
–	O
The	O
first	O
multitouch	B-Application
implementation	O
of	O
SpicyNodes	B-Protocol
was	O
as	O
part	O
of	O
the	O
WikiNodes	B-Protocol
multitouch	B-Application
Wikipedia	O
browser	O
for	O
the	O
Apple	B-Device
iPad	I-Device
,	O
and	O
launched	O
in	O
April	O
2011	O
.	O
</s>
<s>
For	O
authoring	O
,	O
there	O
are	O
related	O
mind	B-Protocol
mapping	I-Protocol
and	I-Protocol
concept	I-Protocol
mapping	I-Protocol
products	I-Protocol
,	O
such	O
as	O
FreeMind	B-Language
.	O
</s>
<s>
Typically	O
these	O
do	O
not	O
allow	O
the	O
end	O
user	O
to	O
change	O
focus	B-Application
from	O
node	O
to	O
node	O
.	O
</s>
<s>
For	O
display	O
,	O
there	O
is	O
analogous	O
software	O
for	O
moving	O
node	O
to	O
node	O
,	O
including	O
:	O
Visual	O
Thesaurus	O
from	O
ThinkMap	O
,	O
TuneGlue	O
,	O
Lexipedia	B-Application
,	O
and	O
Prefuse	B-Language
Flare	I-Language
,	O
and	O
the	O
Discovr	B-Protocol
apps	O
.	O
</s>
<s>
(	O
The	O
Discovr	B-Protocol
app	O
,	O
which	O
also	O
uses	O
radial	O
layouts	O
,	O
with	O
a	O
different	O
layout	B-Algorithm
algorithm	I-Algorithm
which	O
is	O
primarily	O
force-based	O
.	O
)	O
</s>
