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• workflow process defined as bpmn 2.0 (Business Process Model and Notation) file
• each process is registered by name at startup and made available to the underlying workflow engine
• each step in the workflow is a workitem defined in a wid (work item definition, a jBPM specific file), e.g. MgnlDefinitions.wid
• WorkItemHandlerDefinitionRegistry scans the config repo at startup and registers all handlers under workItemHandlers nodes, eg. /modules/workflow-jbpm/workItemHandlers and maps workitems with their respective handlers
• WorkItemHandler is a Java class executed at runtime when the workflow reaches the corresponding work item or step
• workflow workflows are launched via commands, e.g. /modules/workflow/workflows/activate which has a workflow property referring to the name of the workflow to launch

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