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==Ways to Use Processing.js==

This is the preferred method for using Processing.js, and has been dealt with at length in the [[Processing.js for Processing Devs]] quick start guide. To summarize:

# Download Processing.js here: http://processingjs.org/download

Here two buttons in the DOM are used to allow the user to start or stop a running Processing sketch. They control the Processing instance (you might have several in a page, or hidden in divs) directly from JavaScript, calling Processing functions: loop() and noLoop(). The Processing functions are well documented elsewhere.

==Things to Know as a Processing Developer using Processing.js==