#PlayTimeline is a application function of “find neighbors” with Datetime property of graph. If a graph was propagated on the timeline, you could see with “play timeline” function of #AgensBrowser. The way of starting play is very simple. At first, you should select one property of label for the base of timeline data. That property must be formatted as Datetime type like “YYYY-MM-DD”. (Datetime format can be modified) And after clicking “set Timeline” button, the play controllers become active. Highlighting nodes of timeline property is going to be changed until max time. Watching timeline is very interesting. Have fun.