Inner workings of Flowable Engine or implement specifiction of state machine

I know ,the engine that its core is a state machine.
for example:

each node represents a state ?
sequence flow represents a transitions ? …

Is there related articles to introduce more implementation details about it ?

Hey @feng,

The Flowable Process Engine implements the BPMN 2.0 standard. If you want to understand the inner workings then best would be to read the BPMN 2.0 specification (it can be found here) and have a look at the code.