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===Events list===
{{redirect|Future event list|lists of future events|Timelines of the future}}
The simulation maintains at least one list of simulation events. This is sometimes called the ''pending event set'' because it lists events that are pending as a result of previously simulated event but have yet to be simulated themselves. An event is described by the time at which it occurs and a type, indicating the code that will be used to simulate that event. It is common for the event code to be parametrized, in which case, the event description also contains parameters to the event code.{{cn|date=March 2022}} The event list is also referred to as the ''future event list'' (FEL) or ''future event set'' (FES).<ref>{{Cite journal |last1=Park |first1=Hyungwook |last2=Fishwick |first2=Paul A. |date=2010|title=A GPU-Based Application Framework Supporting Fast Discrete-Event Simulation |url=http://journals.sagepub.com/doi/10.1177/0037549709340781 |journal=Simulation |language=en |volume=86 |issue=10 |pages=613–628 |doi=10.1177/0037549709340781 |s2cid=9731021 |issn=0037-5497|url-access=subscription }}</ref><ref>{{Cite web |last=Dannenberg |first=Roger |title=An Introduction to Discrete-Event Simulation |url=https://www.cs.cmu.edu/~music/cmsip/readings/intro-discrete-event-sim.html |access-date=2022-03-11 |website=[[Carnegie Mellon School of Computer Science]]}}</ref><ref>{{Cite web |last=Güneş |first=Mesut |title=Chapter 3: General Principles |url=https://www.mi.fu-berlin.de/inf/groups/ag-tech/teaching/2012_SS/L_19540_Modeling_and_Performance_Analysis_with_Simulation/03.pdf |access-date=2022-03-11 |website=[[Freie Universität Berlin]]}}</ref><ref>{{Cite journal |last1=Damerdji |first1=Halim |last2=Glynn |first2=Peter W. |date=1998 |title=Limit Theory for Performance Modeling of Future Event Set Algorithms |url=https://www.jstor.org/stable/2634704 |journal=Management Science |volume=44 |issue=12 |pages=1709–1722 |doi=10.1287/mnsc.44.12.1709 |jstor=2634704 |issn=0025-1909|url-access=subscription }}</ref>
When events are instantaneous, activities that extend over time are modeled as sequences of events. Some simulation frameworks allow the time of an event to be specified as an interval, giving the start time and the end time of each event.{{cn|date=March 2022}}
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