Generalisation

Up to now, diagrams descriptions have to start with @startuml and to finish with @enduml. PlantUML will allow in some future to generate other diagrams than UML, and in that cases, @startuml would not make sense anymore.

So, the general convention is changed to let diagrams descriptions start with @startXXX and to finish with @endXXX, where XXX has to be changed with the type of diagrams. Of course, XXX is changed uml for all existing diagrams, so that compatibility is not breaken.

Note that XXX could be any strings of characters.

This means that plugin developpers are encouraged to change their code to recognise @start instead of @startuml.

DOT

Since PlantUML uses GraphViz/DOT, it is possible to directly use DOT language.
This means that you can use GraphViz/DOT with all tools that support PlantUML.

Note that the very first line has to be:

digraph XXXX {

Note that you can also use @startuml/@enduml instead of @startdot/@enddot.
Here is a working example:

@startdot
digraph foo {
  node [style=rounded]
  node1 [shape=box]
  node2 [fillcolor=yellow, style="rounded,filled", shape=diamond]
  node3 [shape=record, label="{ a | b | c }"]

  node1 -> node2 -> node3
}
@enddot

@startdot
digraph foo {
 PlantUML -> Dot [label=use];
}
@enddot

Only PNG generation is supported now.