In swimlane, there is four ways that a lane is added automatically:

1. When an object does not have an “R” assign to it, then it’s automatically move to a new lane label “None”;

2. If an object is added outside the lanes, then that object automatically goes into a lane label “None”;

3. If an object is drop from a lane to outside the graph, this object goes into the “none” lane.

4.When another R is added, the system will add a new lane automatically.

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