SDL (Specification and Description Language)

In PlantUML, this is a variation of the Activity diagram.

Elements

This is a gallery of most elements from the documentation.

Core elements of an SDL diagram
Figure 1. Core elements of an SDL diagram
PlantUML source
@startuml
:Ready;
:next(o)|
:Receiving;
split
 :nak(i)<
 :ack(o)>
split again
 :ack(i)<
 :next(o)
 on several lines|
 :i := i + 1]
 :ack(o)>
split again
 :err(i)<
 :nak(o)>
split again
 :foo/
split again
 :bar\\
split again
 :i > 5}
stop
end split
:finish;
@enduml
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