对象分类 资源类(Fixed Resources)– Source, Queue, Processor, Sink, Combiner, Separator, MultiProcessor, Conveyor, MergeSort, FlowNode, Rack, and Reservoir
执行类(TaskExecuter)– Dispatcher, Operator, Transporter, Elevator, Robot, Crane, ASRSvehicle
网络类(Node)– NetworkNode, TrafficControl
图示类(Visual Object)– VisualTool, Recorder16