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externalFrontEnd
![](./../images/homeImg.png)
Web-browser based front-end
The callback function sysCall_event and the sim.getGenesisEvents API function allow tracking most changes that happen in CoppeliaSim, and by correctly publishing and interpreting them, one can easily implement an external front-end for CoppeliaSim. This is what the Three.js front-end for CoppeliaSim does:
![](./../images/externalFrontEnd.jpg)
[Three.js front-end, and corresponding CoppeliaSim instance]
To enabled it, enable first the visualization stream add-on via [Menu bar --> Modules --> Connectivity --> Visualization stream], then open a web-browser and type http://127.0.0.1:23020
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dataVisualizationAndOutput <<
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