The following from the doc is confusing. It seems both a signalling task and a blocking task cannot leave the node until completed. What is the difference? Are the terms blocking and signalling just descriptive and the actual behavior defined by the six signal-properties (last, last-wait, first, first-wait, unsynchronized, never)?

anonymous wrote : 11.2.2. Task instances and graph execution
| Task instances are the items in an actor's tasklist. Task instances can be signalling. A signalling task instance is a task instance that, when completed, can send a signal to its token to continue the process execution. Task instances can be blocking, meaning that the related token (=path of execution) is not allowed to leave the task-node before the task instance is completed. By default task instances are signalling and non-blocking.
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