Vocabulary
graphviz

Inputs and outputs

id	an object
subgraph	a subgraph

Word description
Constructs a cluster, which is a subgraph whose id begins with the word "cluster".

id must be an object supported by the present word. The string "cluster_" is automatically prefixed to the id of the resulting subgraph.

Notes
Clusters are just a syntactic convention. Not all Graphviz layout engines treat clusters any differently from regular subgraphs. See the Graphviz documentation (http://graphviz.org/Documentation.php) for more information.

Examples

USING: graphviz prettyprint ; "foo" <cluster> .
T{ subgraph { id "cluster_foo" } { statements V{ } } }

USING: accessors graphviz prettyprint ; 0 <cluster> id>> .
"cluster_0"

See also
subgraph, <subgraph>, <anon>

Definition

USING: kernel present sequences ;

IN: graphviz

: <cluster> ( id -- subgraph )
present "cluster_" prepend V{ } clone subgraph boa ;